Pedigrees | MIT 7.01SC Fundamentals of Biology

[@asadyamin4867]

I know people asked this one year ago but here is a way for doing these in like 30 seconds max: If it skips a generation anywhere, it is recessive, if not and it's in all: dominant Is it gender biased? Do you see mostly males? Then it's x linked. That way you can identify the type in 10 seconds. For probability, you need experience or just more logical thinking do this fast. Mainly, just think about possible genotypes, which one is heterozygous, which one is homozygous. And just memorize probabilities in a basic punnet square.

[@aseeljust7886]

It is really works 😂 Thank you 🙏

[@siddhantjadhav83]

well looks you are an indian well then how was your NEET exam?

[@gayatridas7268]

thanks for the first two rules .Although im 4 years late but for the probability you could apply the product rule for independent events. imo its much easier than memorizing punnette squares.

[@Icedout24xx]

YEESH! You'd think MIT would have digital chalkboards with touch screen drag and drop options, not a frickin CHALKBOARD LOL!!!. All joking aside amazing in depth video. Very helpful!!!

[@Ice84letters]

I prefer to say that in the punnet square you put not the genotype of the parents but the gametes, so it is even easy to calculate the probability as each alele has 1/2 probability in each gamete to calculate the genotype of the sons and daughters

[@shanelim6312]

triple h might be the suitable person to look for if you want to know about pedigree

[@martinmena4625]

OHHHHH!!!!

[@BalaBiologyWorld]

REALLY VERY GOOD QUALITY LECTURE......

[@mark0032]

The more I watch these videos the I believe I'd be fine in an elite college. If only I had a work ethic 😂

[@alexduval4740]

On your Punnett square exercises you ignore the probability that the progeny may be a male at exercise iii) and a female at exercise iv) but thats like telling the gametes: 'Ok listen up: you may only make an XX fertilised ovum now, and now you may only make an XY fertilised ovum now.. '

[@joeymccracken2060]

I think that's because we knew whether the offspring we were looking at was male or female. So the other half of the Punnett square wasn't necessary. We already knew whether we had XX or XY.

[@alexduval4740]

Something I have discovered for myself recently, that logical symbolism(all Maths are this) can be used to express situations in an exact manner and therefore exclude any other situation is something that when it can be used, should be used. Otherwise the way this exercise is described in this video is of excellent quality like pretty much all that MIT puts on the net: more power to you!

[@JEKKSShorter]

Very clear and helpful! Thanks!!

[@tiputhestrong]

by convention the male goes on top on the punnet square

[@connoresterhuizen6608]

Absolutely brilliant!

[@yushiliang1]

YOU ARE AWESOME!! Thanks so much.

[@wirehot09]

Love any MIT explanation, but the individual of II-3 female should be II-2 i think the numbering was just off a bit.

[@laurentndonje7455]

I'm a big confusion in finding probability for I got 1/8

[@sambasivaraovejendla5274]

Thank you very much! Very nice video!

[@meeromeer8812]

Nice presentation from a NICE LADY...thank you...

[@muzaffarhassan7131]

Thank You...vry helpful 👐

[@atlboy2002]

Great video thanks!!

[@sabyasachibanerjee4816]

It was really awesome. .

[@dottclaudiopurpura4113]

Amazing!!!

[@yves2072]

I do not see how a (XA,Y) or AA (The star square) and the (XA,Xa) or Aa at the first generation, can give an aa.

[@fernandaalves5818]

Thank you!

[@ayanehoshino5227]

Thank you, this was very helpful!

[@Ben-xj6su]

genotype of individual #1 could only be a carrier, right?

[@Mynaselva]

it is very use full but indeed what are the slides we prepare in slab I want that type can u please

[@girish869]

very helpful

[@dabigplaya2389]

Thanks!

[@laurentndonje7455]

for individual 1 can not be a carrier since no girl who is affected since a father is affected

[@fazrinanirzaf]

you are awesome

[@Tomozaurus]

Helpful!

[@anthonylebario4460]

Nice video! To save time on exams, does anyone have a quick methodical strategy to answering these type of questions? Thanks in advance!

[@maroon7563]

I don't understand why it's X linked not Autosomal

[@rxysurfer11]

Exiit I think it’s because only the squares are males. And then it skips generations

[@amritraj6697]

Because only males are affected with disease.

[@YingHuiChew]

There’s no male-to-male transmission in X-linked as the father only passes on Y chromosome to the son. So if the father is affected with X-linked disease, the son will not be affected by the same disease unless the mother is a carrier.

[@michelletodd6000]

I don’t understand what she is saying either because the son receives the X chromosome from their mother. They only receive a Y chromosome from their father. She is confusing.

[@maroon7563]

@@michelletodd6000 thanks god I graduated & don’t need this sh*t anymore

[@kritikamalhotra7687]

you took the wrong gametes of male while taking probability for A

[@MAAZ_Music]

anyone Section x manipal ?

[@MAAZ_Music]

Hi bro

[@MAAZ_Music]

Bhai maths ka paper hai tu bio padh rha hai

[@simonehugar9023]

hayye hum toh make up ke liye padh rahe hai

[@MAAZ_Music]

Main just pass ho gya bio mein 😂

[@fllinch]

thankssssss

[@venkateshbabu5623]

Use slides and try to focus the audience on you.

[@venkateshbabu5623]

Good lecture keep the missing elements like slides and a brighter background.

[@venkateshbabu5623]

Reduce unwanted background noise.

[@nibussss]

They may have seen and dint do that behaviour

[@alangonzalez8389]

Made no sense what she explain

[@dwaipayandattaroy9801]

Always know that if both yandx will be affected then the child will die, this much knowledge is more than everything to spit at these dhope problem, and Grann Maa you are not telling this fact part , but lecturing big bulky bullshit time waste, modern teaching,thank God still now Jeremy Wade sire is not giving PhD , he will only give that to me 😂

[@alice_in_woanderland]

Is it just me, or does she look a little like Mona Lisa?

[@Mustamaggara]

mmmm pedigree

[@prajaktadhawane9935]

😒😒😒😒😒😒😒😒😒😒😒😒

[@CadVol02]

Well done