The Evolution of Males and Females - with Judith Mank

[@fressfisch]

"here we will learn true facts about the angler fish"

[@haroldnaples]

And apply those facts to humans when it suits us. About right.

[@livhillcoast3795]

@@haroldnaples we are not fish, only ted Cruz

[@david2869]

That is how the angler fish do.

[@davidwright8432]

We shall indeed! I follow 'True Facts About ... ' & await '... true facts about the Brexit.' A very, very strange beast indeed.

[@DouglasKYoung]

The only turtle conservation biologists that realised their error with incubating turtle eggs 20 years earlier were the ones with turtle recall.

[@odettegordonyo]

Now as global warming increases we have not enough males. As conservationists we need to protect male producing nests, cooler temps during incubation for boys matters.

[@markxxx21]

She is an awesome lecturer, never a boring moment

[@alfonshomac]

From the depths of my jaded heart that expected blabber, I apologise and thank you.

[@QED_]

@and then i said: Yeah. We have to keep on top of ourselves nowadays. Props.

[@misscameroon8062]

don`t be so hard on yourself,it`s might be just that you`re growing up,dear;)

[@jasondashney]

The world needs more people like you.

[@outsidethepyramid]

@@misscameroon8062 Women like you; condescending, taking the moral high ground, that has made my heart jaded :(

[@misscameroon8062]

silly me,I thought you`re a person...

[@davidmicheletti6292]

I find this a very interesting study. I happen to have sexual development that does not fit the norm for male. In my case germ cells failed to full reach the gonads during early gestation. As a result my gender is sort of ambiguous on a physical and phycological level. In addition many germs cells became lost in several areas of the body. The last of these were surgically removed when I was in my forties. The largest of these was 17.5 cm and took on the appearance of a fetus. This germ cell teratoma had limbs, eyes, bones, skin and even some organs. No wonder I felt pregnant most of my life. Lol

[@BillyBasd]

Am curious, apology in advance for being insensitive. Can/Will you expound on the germ cells getting lost in your body & one developing in your body? What is this called medically? EDIT: Did not read well. Medically this is called a teratoma

[@davidmicheletti6292]

Willis Hampton Most people think that during conception the sperm and egg come together and the sex of the child is determined and no other activity needs to take place for that child to fully develop as a male or female. What people forget is that gender selection is a process that takes place over a period of five to six weeks. During this period of time germ cells are released and they travel though the very small developing embryo. Their final destination is the gonads. But you need to keep in mind that all embryos are more female than male at this stage, in other words the gonads are very much like ovarian tissue. It is the mating of the germ cells that cause these gonads to fully develop as ovaries or testis. This in turn causes the embryo make a much more developed state of gender refinement. They either develop as a adult ovaries or testis. In turn the other parts of the reproductive tissue shift away from the embryonic female to the final real adult gender of male or female. Keep in mind there are over forty or fifty totally different intersex conditions and this is but one thing that can happen during gestation to shape the child. You ask what causes this and the answer is varied depending on the person you ask. Exposure to large amounts of hormones seems to be a factor. A mother taking birth control medications could be a factor. But the environment we live in could also cause it. EDC or endocrine disruptor chemicals mimic reall human hormones and could cause fetal development issues. There are other factors that could cause this to happen. To a certain extent science knows about most of this process taking place but not full process. You see the germ cells do sex the gonads and that is well establish but they also travel though out the embryo during gestation and that suggests the maybe sexing the whole body structure including the brain. Could this be the reason that transsexual have brains that are different than their gender presentation would suggest? Could this be a reason why people become gay or even asexual ? Or are we looking at other factors taking place. In my case most of the lost germ cells were found in the abdomen but I know people first hand who have had them found in the lungs and even the brain. As a child the only outward appearance was one of my testis failed to drop. The germ cell teratoma were still small. At age ten the testis was surgically brough down into place. But they failed to note that it wasn’t really a testis but was infact a ovotestis germ cell. The other testis did develop as a testis but it too only grew to about half of what you would expect a normal testis to be. Ironically I did have a much delayed puberty and even married. To our surprise i was able to produce two children but it took many years to do so. In all I needed many surgeries to save my life. In addition to chemotherapy treatments for stage three testicular ovarian cancer. Hope this answers your question.

[@virvisquevir3320]

David Micheletti - Thank you. That was very well written and very well explained. I learned so much! Glad to hear everything worked out well and that you have two children - I was really curious after reading your first post. Good luck on your cancer treatment! If I may respectfully ask a question: are you high testosterone? Do you have typically male interests like hunting and fishing, fighting, watching football, etc., or do you like knitting, crochet, chatting over crumpets and tea? Do you like guy-movies - violence - or girl-movies - romance? I'm being blunt to keep this short. Thank you in advance for anything you would like to share. All the best! And thank you again.

[@BillyBasd]

@@davidmicheletti6292 Thank you for answering my questions thoroughly & clinically. Sorry i missed the notification & didn't reply sooner. Am glad that the medical profession was able to help you & allow you to live your life.

[@davidmicheletti6292]

Vir Quisque Vir I have both male and female interests. I detest violence of any kind. My testosterone levels have never been any where near normal for a male. That is a good thing as I’ve never seen myself as a male in the classic use of the concept. Yet I have driven our motorcycle all over North America and still do so if my health lets me. Until I was in my mid twenties I was often mistaken for a women. I did so without trying to do so. My persona simply reflected or better yet project the female side of my personality. Some call me transgender and if you bear in mind the word is a umbrella term, then it is true. Yet I tend to be asexual accept of my spouse who is the only person I’ve ever been in love with. For some reason I fell in love with her and no other person has ever caught my interest. My personality would be the same if I were born a women or a male. Gender is not defined as what developed between my legs. My spouse has come to understand and love my body and spirit for what it is. It was never easy for me to preform as a male so we do what we have to do to make things work. It’s worked for forty years so we are doing something right. I do not care for sports other than motorcycling. I do enjoy many women activities but not to extreme either. Treatments and surgeries have done a job to my male sex organs. We do our best to make them work but I’ve never cared if I had male parts or female parts. In other words if a doctor said you need a complete gender surgery in order to live. I would happily hop on the operating table. My personality would be the same after as it was before. I would still love my spouse as I did before. The truth is not much would change for me. Well maybe I would dress with a little better class. I would still love the same movies, books and walks in the woods. I hold hands with everyone now so I guess that would go on. My spouse and I fight who gets to hold new born babies first and that would continue I guess. Lol Oh ! One more thing I tend to be a science geek on every area of science that you can imagine. The reason is by age eight I knew that I was both male and female even though the medical community was half a life time from figuring it out. Because of this I became interested in biology first and then the other sciences. Does this answer some of your questions?

[@Sammysapphira]

THIS is what gender studies should be....

[@inquaanate2393]

This is what gender studies would be if it were scientifically based at all.

[@Leo-pw3kf]

This is a study from from a biological perspective. It doesn't, in any way, negate the socio-historical studies you're attempting to undermine the importance of. Biology doesn't (fully) explain why it's socially acceptable for women to wear heels and not for men.

[@sirspookington]

+benblue3 well, this is just biology.... soooo.... yeah.

[@niallowens6312]

+Leonardo Santos do you even know why high heels were invented? Take a guess who was more likely to wear them when they were invented. And To say men don't wear them is a lie, just look up Berlusconi, the difference is the men's are inside the show.

[@Leo-pw3kf]

Niall Owens you're basically agreeing with what I said. I used the high heels example exactly because men used to wear them in the past, to demonstrate how biology alone is incapable of explaining many behaviors.

[@WilliamHunterII]

After reading Sykes book, Adam's Curse, back around 03 or 04, I was at a party and discussing how it appeared that men were a dying breed. A young lady there, having had a couple of glasses of wine, became teary eyed and exclaimed, "But we like you guys."

[@The1Helleri]

The thing about reptiles is that we're constantly (every few years) discovering populations and one off examples (with captive specimens) of asexual reproduction (largely by the parthenogenesis mechanism) in species we previously thought did not do this. When it comes to turtles I don't know how they fit into this (if they do at all or to what degree). They are not as closely related to lizards and snakes as we once thought. In recent years they've been re-categorized into their own group called Archelosauria. They may not have this ability or perhaps not to the degree that it seems snakes and lizards do.

[@allanrichardson1468]

Remember the ending of the Jurassic Park movie!

[@DrTWG]

Hi . "It's led a _lot of_ field herpers and collectors to believe ..........." . Sorry to be picky but this assertion means nothing without at least some kind of reputable source. Weasel word positive. No offence.

[@The1Helleri]

@@DrTWG You're right. That's anecdotal (coming from conversations I've had over the years which I'm incapable of demonstrating). I've removed it.

[@PetarStamenkovic]

Thank you for this talk. Honesty is refreshing. Kudos to the speaker.

[@kenneth6102]

What I find interesting is that females are perceived as more beautiful in our species, or is it? Female bodies are objects of sexual desire perhaps due to the historical male dominance, therefore the male desires are expressed more. Historically, the male beauty has also made its mark in our art across all cultures, not any less than female. Although there is less focus on the sexuality, the beauty is no lesser in the ideological and philosophical sense. In modern days, with increasing female independence, the beauty and sexuality of man are also increasingly exploited. Would it be a social phenomenon that women are more associated with beauty than men, rather than a biological outcome, as there is an obvious shift in the trend displayed by the media?

[@amacuro]

I was not confused at all during puberty, luckily. I knew I was intensely attracted to girls since i was 5

[@amacuro]

@@DrBrainTickler if you read carefully what I said, the luckily refers to not being confused at all.

[@Free_Falastin2024]

Same here. Been attracted to and actively engaged with girls since I was ~6 years old. Zero confusion.

[@wayneyadams]

Me neither. Had two girlfriends in first grade, one blond, the other brunette. VBG

[@knightheaven8992]

@@wayneyadams Yep same.

[@hawk0485]

seeing the like-bar of this video, when I clicked on it, was as pleasant as it was unexpected

[@osmosisjones4912]

What protects Z chromosome and Sea turlds lay hundreds of eggs so only a few females are needed.and I thought ants take turns

[@Gaudwin1]

"until we sort of end up with 06:37 the chromosomes that we see today in 06:39 humans a very small X and the very large Y " Shouldn't be the reverse?

[@MaiaPalazzo]

She misspelled.

[@CC-yh2yq]

mai palazzo a very large X and a small Y, she got mixed, as Y chromosomes are basically shortened/ broken X chromosomes through evolution

[@nataleo9093]

Awesome video, sharing with my evolutionary psych students, thank you!

[@dexterdextrow7248]

Yet the idea that human males and females could posses different traits, even just on average, remains a absolutely Inconceivable proposition to many.

[@UteChewb]

A great talk. I knew that sex determination in animals was mind blowing but this was even better than I expected. I didn't expect the impact that sex has on the network of genes, wow.

[@katiekat4457]

I wish the necklace wouldn’t hit the microphone and make the crackle and crunching sound.

[@sugraf]

OMG. Who did the sound setup. Why would you put the mic next to the neckless. The constant noise of it is infuriating!

[@davidlindstrom4383]

This is a very interesting presentation on the diverse ways that different species exhibit and maintain distinctions in the semester, but I was hoping, based on the title for more explanation, or even speculation, about how distinct sexes evolved, or could have done so.

[@itnazurl]

Does she mix up X and Y around 6:47? Mentions X but the slide shows Y.

[@J7116R]

Take a guess.

[@chickensinmygarden]

She also talks about a small X and large Y about then. I'm surprised there isn't an onscreen correction.

[@seppstarthebest]

@@chickensinmygarden maybe because she worked so much with guppies where the y chromosome is actually larger

[@AbhishekBatra]

There are multiple mix ups throughout the video. She keeps you on your toes.

[@solarnaut]

itnazurl thanks for posting that... I was only half listening/watching... VERY INTERESTING... and definitely some "weird" stuff … like the way the birds transmit gender... I could see where a talk covering such diversity could get confused, but now you've got me wondering what bad info I've taken in.

[@kennethflorek8532]

She packed a lot into 39 minutes. Wow. I appreciated the succinct details of genetics that made sense of things I have heard before (in birds, bees, alligators) where they had left out some important things. It is worth hitting pause and examining that diagram. I didn't know that there were haploid adults in multicellular animals, as in the male bee. It would be too much to ask whether the Z or W is the ancestor of the X or Y or neither. It would be too much to ask whether the sex system in plants is genetically identifiable with sex in animals.

[@osmosisjones4912]

Darwin's model of selection vs Model of Practice and Passed down Gene expression. It's more successful to in process of elimination to lose and gedicen. We see this when conditions get harder. More competition for resources. Life begins to cut back. Brains. Activity . And we see this in Chromosomes. Men with two X Chromosomes XRY jumbled Chromosomes. Or Even 2 Ychromosomes actually have low testosterone. Sperm and body hair. Conter intuitive . But show's that the Y Chromosomes is so short because other Tates conflict with Male characteristics. So Female choice is responsible for degradion if the Y Chromosomes

[@no_more_free_nicks]

Excellent lecture, I really enjoyed it, the quality stands out. Thank you!

[@shmeet]

18:04 "If you're large and a male it doesn't help you at all..." - 18:18 "...and males compete fiercely against each other and that competition is based almost entirely on size..." WTF?

[@senatorjosephmccarthy2720]

Her entire proposal is total nonsense. The hypotheses of evolution doesn't reach the qualifications of a theory. And Nothing has ever evolved on the macro scale, and never will, it being impossible.

[@alexojideagu]

@@senatorjosephmccarthy2720 evolution is a fact

[@alexojideagu]

Clown fish don't fight for mating spots so they don't need big males. Being big only helps them lay more eggs. The other fish fight so need big males.

[@markburianyk6556]

@@senatorjosephmccarthy2720 any of that what I already know is "nonexistent" evidence to go with that most idiotic of claims, or are you just mindlessly repeating something you've heard from some other mindless and fully ignorant individual? I love how you people know so little that you wear the hallmarks of a know nothing ignoramus with pride and act as though it is evidence of your intellectual sophistication, rather than seeing it as the very public self humiliation it in fact is

[@paulspring]

4:28 This part is my absolute favorite... Listen really close and see if you hear what I heard.

[@volbster2]

When you spoke about the female guppies you said their preferences to colorful males preserves the Y chromosome. That's pretty interesting. So basically a preference for something can affect evolution?

[@Lesminster]

Very interesting. Some science based informations always welcome :)

[@MrNhojstrebor]

I don't understand anything, but I do like her foot work and poses. Good job with that.

[@shubbar]

This was much more interesting than I anticipated. She is an excellent presenter.

[@sunsetpalms1923]

Wow. Evolution is awesome!

[@bugsandbrushes]

Interesting Lession and speaking pattern is captivating. Thank you so much for sharing :)

[@osmosisjones4912]

Actually see men with Two Xchromosomes XRY jumped Chromosomes or even men with to YY Chromosomes have .low testosterone .weak muscles. And low body hair. Maybe reason Y Chromosomes is short because other Genes conflict. So expression of male trates the Y Chromosomes gededcen it's what to expect from Darwinian process of elimination. So Female choice might actually be responsible for the degradion of the Y Chromosomes

I'm wondering how's this video not being reported and sanctioned yet? She's great ;-)

[@drdon5205]

Dr. Mank did a fantastic job with her lecture. I enjoyed it very much. Thank you.

[@kishdom282]

The fact that you used the word "unusual" is very subtle, almost like not wanting to expound on the WHY..

[@ErikFord-cg4em]

And I thought her hair was her most attractive feature when I first turned on the video. A thought-provoking piece, presented with confidence and enthusiasm! Thank u both, the speaker and the uploader.

[@ellie698]

Is it her necklace that is causing the poor sound quality. Something is rubbing intermittently against her mic. Most irritating The sound engineer should have sorted this out, placed it more suitably to avoid this problem.

[@TravellinMatt77]

So, subordinate male turkeys are actual wingmen ;). I'll see myself out ...

[@Jearl_Black]

I got the door, I'm right behind ya'

[@trespire]

Angler fish looks like my friends mother in law. We always have fish on Fridays.

[@doemijmaarfriet]

great talk, please fix the microphone glitches post-proces

[@drewpearcy1]

outstanding presentation. humorous. understated.

[@arno_nuehm]

…and necklaces do it with microphones-their love-making sounds drove me nuts.

[@davidwright8432]

But only because you're neither microphone or necklace. Please try to see other species' viewpoints.

[@ufodeath]

@@davidwright8432 Yea, talk about an ignorant brute!

[@noeldillabough2153]

Females prefer a really long snood...who'd have guessed? :) Very interesting talk, so much I had no idea about!

[@Hyumanity]

Wow, this was actually a very interesting lecture! I'd like to listen to more of your work Judith Mank :)

[@hannajung7512]

One of the greatest video on this topic by far.

[@snowballeffect7812]

Interesting that people in the comments seem to think humans have sexual dimorphism as extreme as angler fish... It's like you all ignored what she says at 3 minutes lmao. She literally says a single gene in humans determines genetic maleness.

[@tom-dahl1598]

Because they wish to push an agender. People are generally idiotic.

[@jamingaming9251]

Because she know what shes talking about

[@flat5sharp11]

@Snowball effect: "Interesting that people in the comments seem to think humans have sexual dimorphism as extreme as angler fish" What a ridiculous conclusion. Based on what? What's "interesting" is that you "seem" to be projecting an interpretation based on your ideology.

[@tom-dahl1598]

She literally said that there is basically no difference between male and female brains in terms of genetics.

[@jamingaming9251]

@@tom-dahl1598 the brains might be the same but they are wired differently

[@Tall-Cool-Drink]

How did evolution know to make male and female reproductive organs to become compatible with each other? Didn't organisms evolve independently, and separately from each other, w/o knowing what was happening to each other? . Example: For any software systems to connect and be productive, the systems must know about other systems that may want to connect. Each software must know about the location, IP address, User ID, password ...etc... and maybe even the operating system of the other computer systems, before the connection can be successful. So, how did evolution know how to make the connection between two random systems possible?

[@Tall-Cool-Drink]

@WHENDOESITEND? How does evolution know it works? Did evolution test the system, like a software engineer would test the code he wrote? So by coincidence there was another counter part system that was working perfectly to test with?

[@Tall-Cool-Drink]

@WHENDOESITEND? Caveman came from two parents who had functioning reproductive systems. So, talking about caveman doesn't answer my question.

[@Tall-Cool-Drink]

@WHENDOESITEND? Thank you for being another dead-end thinker. Just admit you don't know. You'll be more respected for it. "Guy, it's just...." Just what? 😂 BTW I'm an atheist..... I just got tires of reading "probably, possibly, assuming...." In every document on evolution.....

[@Foreseeable1]

That necklace grinding the microphone was quite the distraction.

[@angeluomo]

Very insightful video. Great presentation skills, Prof. Mank

[@nicholasschoonbeck6866]

Its interesting how male commenters typically have a complaint along with their compliment -

[@Max6711]

Great talk, very interesting and fascinating

[@Guitcad1]

I'm sitting here listening to this and thinking "Is she an American who's lived in the UK for years and picked up a hint of an English accent? (and only on some words.)" It took me awhile, but right now my money is on her being Irish. That's how close the accents are. I could be completely wrong. Go ahead, have at me.

[@levybenathome]

She's American, from Texas, but has studied in different places. www.zoology.ubc.ca/mank-lab/Judith/

[@drts6955]

Almost definitely not Irish, sounds American or Canadian perhaps. But yeah has a bit of an accent. But the more I listen the more American she sounds

[@drcovell]

WHY do a a significant number of British programs have such good content, while the majority of US TV are vapid bullshit?

[@suemick8709]

I've observed behaviour similar to the wrasse with mallard ducks. A pair of mallards , male and female, were puttering around in the water. When the paired male mallard was occupied two lone males jumped in and mated with the temporarily unaccompanied female. It happened very fast and they , the bachelor ducks, wasted no time hanging around for small talk.

[@RPSchonherr]

Men don't need makeup to attract mates. So who's the more beautiful of the human species?

[@vr46girl85]

Brace yourselves, the comment section is full of people not talking about what they didn't see in the video but how it's always being talked about by not them, only when it is.

[@bindaredundat-uv6wz]

TROUBLE MAKER !!!!!!!!!!!!!!!

[@ronadami5747]

Amazing sentence. Astounding, stunning sentence

[@bindaredundat-uv6wz]

@@ronadami5747 EXACTLY !! BUT THERE ARE PEOPLE OUT THERE THAT THINK ITS NORMAL !!! WE KNOW IT,S A MENTAL PROBLEM !! WE MUST LET THESE NUTS KNOW THAT THEY NEED TREATMENT !!

[@ronadami5747]

@2manynegativewaves You have a very appropriate moniker

[@comanchio1976]

ron adami It's called "humour". Naturally, this will fly over the head of the simple minded.

[@diogenesbezerra]

She actually offered no explanation on how males and females could evolve in parallel. It is a basic but unexplained question. How can you build the whole theory without a strong foundation?

[@JoTheVeteran]

Great presentation!

[@robertmurdock9750]

I was hoping she would mention that turkeys can reproduce asexually and the offspring are all males instead of female and how that works.

[@MrPageyjim]

She says to disregard the death of the Y chromosome in the estimated 5 million years meanwhile the average mammal species dies out in a million years.

[@MuadDib1402]

Great talk. Amazing hair.

[@DeJayHank]

the mic doesn't agree

[@aussiechris5904]

yes glorious red hair

[@sugitox9864]

In the comments section of most KZbin videos that I watch I'm going to recommend to all the BAD program makers out there that they should watch THIS lecture as a shining example of how a talk should be delivered! Prof. Mank, in your lecture you do far more than share information! You make the quest for knowledge joyful, attractive, and sexy! Thank you.

[@JoeNoshow27]

Because she doesn't talk about gender - the sociological influences that impact it; the vast amount of ambiguities between a conceptual male or female brain due to an amalgamation of shared neurological configurations; the involuntary, inherent and biological basis for gender fluidity - the video is generally well received by presumed status quo warriors for not contradicting their compartmentalized views.

[@SefniAsheforr]

How come when I look up "How evolution influences sex/gender", this is the only video that comes up discussing actual evolutionary biology and how our evolutionary history has influenced the behaviors of both sexes?

[@Uhlbelk]

Nothing in this talk is about evolutionary history influencing behaviors of both sexes. Only a few side comments that x-behavior does not result in reproduction therefore x-behavior increases the passing down of z-behavior genes.

[@wammo12345]

I think she mixed the turtle temperature concept, getting it back to front, higher temperatures cause more males in tortoise and tuatara, possibly the same in turtles.

[@Tangobaldy]

shame bout the constant clicking and crunching noise, had to stop watching

[@podboq2]

in the future, try to not attach your microphone in such a place that your necklace constantly hits it. :)

[@youwhatnow]

Is there a point in this video I can fast-forward to that isn't spoilt by the necklace hitting the microphone? It's a very interesting talk but the sound problems are too distracting to enjoy the content.

[@chloewebb5526]

@@youwhatnow I never noticed through the whole thing, only after the video when i started looking into the comments. Maybe I'm just more used to hearing jewelry in my ears lol

[@Genderwang]

@@chloewebb5526 I didn't noice it either. Maybe it is more obvious on some sound set-ups than others?

[@topgurl9313]

Very interesting. The relationship between the Amazon Molly and the Sailfin Molly is so weird

[@radiofun232]

Very interesting lecture. Are the mammals showed at 6.22 species that live today? If so, why is that combined with the theory that X and Y chromosomes were once (when?) the same. I always have kind of problem when scientists make analogies (regarding animal behaviour) with human behaviour, like "some ants give up their lives to save the survival of the colony". What happens (in biochemical or whatever terms) when the sailfin molly sperm meets the egg of the amazon molly?

[@sstolarik]

Good lord. The necklace on the microphone made this near impossible to focus on this info. It’s all I could hear.

[@radiofun232]

Is it possible to answer my question: what happens (in biochemical terms) when the sailfin molly sperm meets the egg of the amazon molly, so that the amazon molly can reproduce?

[@radiofun232]

@@user-if1de8pt2j She swims alongside her and suddenly she poops out new fishes :)

[@popoioopoo2088]

Great lecture. I never thought there were species whose differences between sexes varied this much! LOL Btw, what an interesting accent the lecturer has. Seems like a british accent with some phonetical elements from american english. Does anyone know where is she from?

[@popoioopoo2088]

*whe she is from

[@popoioopoo2088]

I think I figured it out: she is an american who has been living for a long time in the UK

[@graemeroberts2935]

Born in 1976 in Houston, Texas Studied Anthropology at the University of Florida and Genetics at the University of Georgia

[@popoioopoo2088]

As I suspected. She seems to have assimilated some phonetical traits of british english . I suppose she's been in the UK for a while

[@stereotypish]

some new england accent maine or vermont

[@anjuk6255]

One of the Beautiful talk I have ever seen

[@kevinfairweather3661]

She has so much knowledge, it impressive !

[@audience2]

Experts in their field do have a lot of knowledge about it.

[@holz_name]

According to feminists sex differences are a social construct and that in fact both sexes are absolutely equal.

[@Mandragara]

+Erwin Müller I support equality in terms of access and the law. Feminists demanding equality of outcome is unrealistic.

[@holz_name]

***** I think the general rule is that women are more content and more intelligent on average, and that men are tend to go into the extreme on both ends (stupidity intelligence, aggressive pacifist), and that men are more risk taking than women, on average. But maybe my knowledge is obsolete, I'm not really interested that much in gender studies.

[@easytokillme9910]

Old School wtf are you babbling on about??

[@fCauneau]

Great !! Is there another conference on species using more than 2 sexes ? Could be an interesting complement...

[@jondunmore4268]

1:23 -- That angler fish fact of the male burrowing into the female is astounding, disturbing and icky.

[@nuages3406]

How did we evolve to develop sexuality in both animals and plants?

[@dangerdackel]

Think she got her X and Z mixed up

[@osmosisjones4912]

Is it possible the Amazon Molly can share RNA or limpid Gene Expression or maybe pass a few compatible genes

[@MilesDavisKDAB]

Interesting stuff, but the speaker, Judith Mank, gets X & Y confused more than once. Obviously, these are just slips of the tongue, but these errors will confuse many non-biologists who watch it.

[@Joe-kb1sm]

I know one thing, internal fertalization is lots of fun.

[@eave01]

Thank you so much!

[@deepred5461]

So is she saying that differences between males and females is "NOT" a social construct?

[@hmgrraarrpffrzz9763]

Depends on whether you are talking about sex or gender.

[@jeffschwager1407]

Disagree with one of her comments: "If you're large and a male it doesn't help you at all..." Actually, being large and being a male helps you compete against other males for breeding rights.

[@phinhager6509]

Not if you're a clownfish, where territory is not a limiting factor, and there is no need to aggressively guard eggs kept in an anemone or rather math Coral.

[@JackVermicelli]

Her accent is really throwing me. The RI is in the UK, and I tentatively decided that maybe she's from Ireland or N. Ireland. But then I looked her up, and saw that she works in Canada. But then in the video, she says she grew up in Florida! I don't know what's going with that accent.

[@larrydaniels6532]

It was easy to guess that she was an American (US version) that assumed the quasi-British accent.

[@JackVermicelli]

It's easy to guess lots of things, but that has no bearing on whether the things are accurate.

[@larrydaniels6532]

@@JackVermicelli As always, I am correct.

[@Genderwang]

Definitely some Irish accent in there. She seems to have been based in London at UCL for much of her early academic career and it looks like she didn't move to Canada until after this video was made.

[@xandralinest89]

This was an interesting and informative talk, still my biggest take away is how great her hair is

[@dahliathereader2872]

I don’t know whether to be disgusted by or in awe of the angler fish

[@adelaidevonalleman5029]

This lecture explains so much in male psychology across the spectrum of species.

[@njosborne6152]

Monocultures are impossible to maintain over time Humans included⛓

[@ramonbril]

This talk was amazing but littered by small (but also crucial) mistakes. I am a nitpick :X

[@bebemochi]

Ramon Bril please list them, I’d love to understand this better.

[@ramonbril]

@@bebemochi I would but it takes so much time!

[@ramonbril]

​@@DrBrainTickler It would be helpful if I knew whether I was talking to the women giving this speech - who has put in a LOT of work to do this talk - and not some anonymous who wouldn't give a damn if I spent 90 minutes on producing those nitpick answers. I very much disagree with your egocentrism, it's hurtful to the internet. "It's fine to correct people and argue as long as you're right." How would you know to be wrong without argumentation? All corrections can be wrong. And then to say that you are mostly right. You have a big ego, way to big. That's going bite you in the behind later in life.

[@Giulionegri01]

Very interesting but the title is totally misleading.

[@flintwestwood5920]

The audience seems oddly delighted by any insinuation of inferiority or irrelevance in males.

[@alastorwyst9027]

I watched it for one minute of and noticed that the woman is rather emotional about it. I think that woman are incapable to being 100% truthful about this subject.

[@MaiaPalazzo]

This only displays your insecurity and childlike maturity.

[@alastorwyst9027]

@@MaiaPalazzo Why would that be immature? Is it immature to criticize woman.

[@Genderwang]

@@alastorwyst9027 It's immature that you were unable to pay attention to what she was saying and were distracted by the fact that it was a woman speaking.

[@ShaneB24642]

45% interesting 55% non-interesting More of a Physics and Chemistry fanboy!

[@scattygirl1]

If the male turkeys decide between themselves who is the dominant male and thus the one that will mate with the females, why then the need for visual display to attract the females? Isn't it just Hobson's Choice for them and therefore superfluous?

[@khronosgauntlet2257]

The females still decide which dominant male family she wants to join.

[@DX10Pilot]

what happens with halibut where all are born as males but transform to females when they mature and get large in size.

[@nomadde3415]

good content

[@Corpselordx]

Wait what, so the Y chromosome's only chance of survival in the long term is if women prefer more diverse males instead of mating only within their ethnic group? Was that what she was trying to illustrate with the guppies example? Her conclusion on that topic was a bit too vague and I'd like to know more.

[@KH-mx7bg]

No that's not what she was saying. Her point was that the number of genes on the Y would at worst reach an asymptote comprising only genes required for production and success of male gametes. The extreme negative fitness associated with loss of fertility prevents the loss of the Y because the Y is required for human fecundity. She only covered the death of the Y chromosome very briefly because she does not believe the idea to be well supported or serious. The example with the guppy was to demonstrate how selection can preserve the Y chromosome.

[@GScottChaosnaut]

Graph with 3 points of data. LOL

[@LotusSpider]

Nice Shitstorm Eris Kallisti Discordia, very much appreciated ;)

[@hayrayna1314]

No Judith, ALL EXPLAINED IN FIRST 2:19. Thanks.

[@zetaconvex1987]

Fascinating.

[@gordonstewart5774]

Interesting how those well-meaning turtle-savers were actually causing more harm than good, and only discovered 20 years later! Imagine such well-intentioned meddling on a planetary scale.

[@wayneyadams]

She said that they found about the mistake when the males came ashore to lay eggs. Oops!