Meiosis I

[@colematthews7535]

Hello Andrey, I want to take the time to comment and thank you. Your videos are always very clear, interesting, and informative. The best part, though, is your teaching style. You always ask the "what if," and "but why is that," questions, that inquisitive minds immediately jump to when having something explained to them. I'm virtually never left with any questions after watching your lectures because of this. You tend to repeat things a lot, making it hard for me to lose track of what's going on. I seem to have developed a proclivity for binge watching your lectures whilst consuming cannabis, lol. Makes the material even more interesting than it was to begin with! I sure am learning heap! Thanks man!

[@ujjainimukherjee4328]

You're an amazing lecturer...we can see your passion...the effort you put in for students and science enthusiasts worldwide. We need more people like you.

[@xxegyzz5250]

I really like your teaching style. Your videos deserves a million views and your channel deserves a million subscribers. You never left any single important term that we need to know. Thanks a lot Andrey ! I hope you continue making videos.

[@مونتاجتفحيط]

8:49 if you want to see the whole board

[@malinduanjana3071]

You can download his notes by going his website

[@sbizzyA100]

I luv this brother right here.....and am not gay.the delivery is perfect he articulates everything so well.....some one give him an award please

[@hingaedwards4132]

I am a teacher in High school in sierra Leone. I have learnt a lot watching these videos. God bless dear. Jesus Is Lord

[@dianacarrington2096]

I'm trying to get ahead in my biology class(because I really like the course) and this is really helpful, along with so many of your lectures. Thank you so much.

[@yasminyusof5841]

Thank you Andrey for the lecture. i always follow your lecture even when i took my midwifery course. now im taking my degree and still with you.

[@stephanie6866]

you have made me understood by just listening halfway. thank you so much. i love your videos.

[@EmmyKhan]

I appreciate the quality learning viayour body language, your rethorical skills, and the well put and explained information you give. Thank you. I hate to compare this to khan academy, but these lectures are on point. Very well made. Thank you.

[@nitachima542]

I love your lectures Sir, it has been helping me in my studies. Love from Nigeria.

[@iraqi3612]

Doctor you really saved my life I didn't understand anything about genetics because I misunderstood meiosis from the heart all love🌹🌹

[@immaculateaharanwa1572]

This guy is so good

[@beatricechilayi6249]

You explain clearly,thank you.❤️❤️

[@Salopovpaz]

You are a blessing Dr AK. Thank you very much

[@villageofbotany3296]

Dear Andrey your lecture is boon for students and lecturers .Thank You

[@halibakda1540]

What a helpul lecture. Thank you for your work.

[@SambitPatra1]

You have not discussed about Leptotene,Zygotene,Pachytene,Diplotene and Diakinesis in the Prophase-I

[@mfaisalhameed6434]

excellent....it's really helpful both for teachers and students.

[@ShogunBai]

9:58 You say we have 4 individual Chromatids, but that term is technically wrong - right? There are 2 individual Chromatids with 2 identical (sister)chromatids.

[@Youkimilosa]

Hi, thanks for your kind answer, I just found it a little confusing because the 2 centrioles of 1 centrosome always stay together and one centriole cannot decide to "get divorced" from its buddy to live a separate life at the other end of the cell

[@robasancho8857]

i was confused in this lecture but now i am Belsed by your lecture😋😋. 10q teacher it was belssed video

[@Youkimilosa]

Hi, great and crystal clear! Many many thanks! But the centrosome which contains 2 centrioles is replicated during interphase. So during metaphase 1, each of the centrosome begin to move to opposite ends.

[@AKLECTURES]

Yes, the centrosomes are replicated during interphase. But the centrosomes move to opposite sides before metaphase I. They move to opposite poles during prophase I of meiosis.

[@FrostySpade]

Can you answer this importation question? please?..... what do you use to record and what wireless mic do you use (on your shirt)? Ur encouraging me to make lectures!

[@MartinUcik1]

Thank you. Great! Been looking for this for several days!

[@pushpamahadevan7242]

Many thanks for all your videos.

[@slimbenelkadhi2958]

that's very helpful , thank u very much , u're talented man !

[@oceanwaves657]

16:10 clear views of the board.

[@AnginaFalengi]

Why are prokaryontic cells not able to divide with meiosis? Like... Why does meiosis not occure in prokaryontic cells? Great lecture btw, I'm just preparing through all of them for my bio test :)

[@lovelynnkolika6142]

Which stage of mitotic and meiotic division does the cell experience equilibrium of forces?

[@lalitjoshi6731]

As in meosis,we take one purple chromosome and and one red in parent cell.....But why in mitosis or in somatic cell,we take both chromosome as black ......Why?

[@pratikarpaudyal674]

in both all.. 46 chromosomes r replicated.. but difference is only in crossing over . ....

[@hibasaeed4806]

i want to ask you ? why you do this , record this lecture and help people , you are very amazing

[@sahrahussein8319]

Omgg thank you so much... u helped me alot here

[@carolinemasika9460]

Ak,,, I am in need of an explanation in the transformer genes and their effect on sex determination in drosophila ( expressed in homozygous and heterozygous forms ) please help me on this

[@oceanwaves657]

Fantastically easily understandable lecture. But I think this video finished abruptly( may be not uploaded the summary of the lecture which AK usually give end of every lecture)

[@mahmutmahmut6892]

so teacher when you are saying homolog chromosome are separating from each other and they are replicated and form a pair which contains two sister chromatide so these two sister chromatide thing is still 1 chromosome ( for example the red one which contains two sister chromatide ) isnt it?

[@هاء-ظ7ق]

I love this guy

[@anzaanjum3845]

sir........ why centrioles replicates. why not a single centriole on both poles forms spindal fibers. thanks very much

[@fanpriyanka]

you are one amazing man!

[@Youkimilosa]

Thanks but in your lecture, you talk about centrioles which move.My point is I think it should be replaced by replicated centrosomes to be more accurate. The same remark applies for the mitosis lecture. thanks again!

[@AKLECTURES]

Maxime Thumin Sure, I am not arguing with you that a centrosome consists of two individual centrioles (mother and daughter). But if the centrosomes move, and the centrosomes consist of a pair of centrioles each, its only logical to talk about the centrioles moving, right? More often than not, centrioles and centrosomes are used interchangeably. And in my opinion for good reason. But, you're correct, I should of been more explicit about differentiating between the two. :-)

[@blertatiganileka4941]

hi.im not a biolog but im interesing to know about in which day of menstrual cycle prophase 1 of meiosis 1 end begin metaphase 1 .thank you

[@blertatiganileka4941]

hi.im not a biolog but im interesing to know about in which day of menstrual cycle prophase 1 of meiosis 1 end begin metaphase 1 .thank you

[@blertatiganileka4941]

hi.im not a biolog but im interesing to know about in which day of menstrual cycle prophase 1 of meiosis 1 end begin metaphase 1 .thank you

[@blertatiganileka4941]

hi.im not a biolog but im interesing to know about in which day of menstrual cycle prophase 1 of meiosis 1 end begin metaphase 1 .thank you

[@studdf6659]

Sir by the end of the telaphase 1 i think the produced cells are diploid not haploid because they contain 23 pair Am i right And thank you for these amazing lectures

[@23TheGame11]

Very good question, but you would end up with 23 haploid chromosomes after telophase I, not diploid. The reason is because telophase I splits the HOMOLOGOUS PAIRS into 2 separate cells, meaning, the 2 daughter cells DO NOT contain homologous pairs. However, the sister chromatids are still attached, which will get split after Meiosis II. Hope that answers your question.

[@swagath.v3472]

Very good question.... They may look like 46 (with sister chromosome) but the actual number in that chromosome (with sister chromosome) is only 23

[@swagath.v3472]

@Endangered species Yes, they are not identical

[@mohammadjibawi1216]

shouldn't (meiosis I) produce two genetically different diploid cells with 46 chromosomes and (meiosis II) separates theses two cells to produce 4 cells with 23 chromosomes each? Great lecture by the way, it's that only thing that I think you got it mistaken

[@nurajafar8366]

No. Meiosis I produced two haploid cells and these two cells divide (meiosis II) into two cells identical to them (haploid)

[@eloaloa2000]

You are the best man thanks a lot

[@nwaramm9580]

Chromatin contain DNA and Protien and small quantity of RNA what id the role of this RNA

[@nigelmasuku8563]

im just following your lectures '' u say things

[@fredyalphonce6696]

Thaks for your lesson

[@lintanganindhityaindraswar8838]

Thank youuu😊 your video is absolutely amazingg😬 help me a lottt, thanksss😬

[@ankitachoudhury5546]

can anyone answer this question of mine- There are 23 pairs of chromosome in a somatic cell, how are the chromosomes paired in the somatic cell?.

[@Cass_i]

46

[@alejandrajimenezescobar1470]

thanks a lot!!!!! you are the best!!!

[@laithalpadani8581]

Thanck you, fantastic

[@princessxx94]

there is 3 pair of chromosomes in the picture not 6 pair of chromosome correct?

[@ant0_alwin]

Yeah you are right. The assumption should be that there are 3 pairs of homologous chromosomes which would lead to the formation of 3 tetrads in metaphase 1.

[@sukainaad2724]

Thanks so much ☺️

[@saragamal2718]

You are awesome 😁😁

[@Aggm233]

please make some videos for immunology,I give exams on 12th and i'm in a hurry XD pleaaaaase

[@AKLECTURES]

already have some. check my website.

[@bushraarif9547]

Thanks a lot...

[@tabarakebaid5326]

9:14 The whole board

[@itchyprince3793]

16:11 is a better view

[@ran9628]

I love your lectures but I wish if you could talk faster. Thanks

[@EmmyKhan]

rand esber speed up video. I listen at double speed always

[@morningstar8466]

Emkay thanks a lot for help!

[@BANG-dl1uu]

I think it is the best part of him as we( non- English) people can understand it clearly.

[@yagmurcamd]

Progress.

[@irus1]

tysm

[@miraculousicon2097]

luv ya

[@otfive3763]

Hello 2b potangina wla kong naiintindihan ser

[@getitdone0010]

You're an amazing lecturer...we can see your passion...the effort you put in for students and science enthusiasts worldwide. We need more people like you.

[@lovelynnkolika6142]

Which stage of mitotic and meiotic division does the cell experience equilibrium of forces?