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Pedigrees | Classical genetics | High school biology | Khan Academy

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An introduction to reading and analyzing pedigrees.
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Опубликовано:

5 сен 2024

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Комментарии : 189

@jaredackley7997 5 лет назад

who else has an exam in an hour and is cramming

@uduakntuenstv9629 5 лет назад

Jared Ackley same here

@twitchopasteee3809 5 лет назад

Jared Ackley 10 minutes

@lopstersharks9385 5 лет назад

Tomorrow

@Alexlabtester 5 лет назад

Yes

@connormitchell9220 5 лет назад

Year 10 exam in 2 hours, this shits so hard

@pyxidis1632 3 года назад

6 minutes taught me more than my biology teacher has in 90 minutes

@dannnxo 3 года назад

Fr you aint even lying

@kivan6657 2 года назад

no cap brother

@rachelnazario2181 2 года назад

Frrrrr

@jareth3387 2 года назад

@meileytat 2 года назад

HELP SAME

@ItsKruski 3 года назад

I love his hand writing and voice... perfect

@emmanuel_toowavy8282 3 года назад

This 6 minutes video Taught me well more than what my biology teacher would do in 3 hours 😬

@xoxoali9070 5 лет назад

procrastination at its finest

@superALA-ff6us 3 года назад

why you gotta call me out like that

@reggiewastler7305 3 года назад

How did you know

@BobsBites 6 лет назад

At first I thought it is pedigree for DOG FOOD, but now I know its a lesson.

@theorange8755 4 года назад

😂😂😂😂😂

@thespectator700 4 года назад

lol

@lumiere3711 3 года назад

I thought so too but when my prof introduced the lesson I was like why is there circles and squares xD

@shagganuereeves158 3 года назад

Appreciate this man for teaching us

@papupradhan9920 6 лет назад

I want more on PEDIGREES

@legendsthatlast1510 Год назад

God bless you! I could never understand it but you broke this down so well compared to my college textbooks! We do not even currently have a lecture! Taking Biology online was a mistake on my part!

@jazzylovesth 3 года назад

thank you so much! i'm working on homework right now and you explained it very clearly, well done!

@Starrymoon_star 24 дня назад

A 6 min vid explained better than my math teacher in 1 hour thank you so much sir I wish my teacehr was like you much loves and thanks!!🎀🎀🎀

@14debi59 3 года назад

English and your explanations are excellent .

@sobiakhurram4955 6 лет назад

Mr. Khan you're awesome

@iloveyunseomuch 10 месяцев назад

thank you this explained it so well

@jookie4207 2 года назад

Yes, but how can you tell whether the pedigree displays a dominant or recessive allele? You just gave us the answer that it’s dominant but didn’t tell us how.

@selenite3890 Год назад

it's hard to explain, but you look at the ones that are colored in. generally if there are more that aren't colored in its recessive, but that's not always the case. here, you can tell because the only family where none of the children have freckles is the one where the first generation's daughter doesn't have freckles and in everyone else, freckles are more common.

@sukshasakura4997 5 месяцев назад

Isn’t because there isn’t carrier ? It’s either affect or unaffected in the dominant while it can be affected, unaffected, and carrier in the Recessive

@backstreetfan2887 3 года назад

I just love hearing Sal teach keep up the good work thank you for all you do

@shiveshsatyakam7468 2 года назад

Bhai bahut aacha bataye hain i clear my concept from 0 to1

@shubhchoksi2346 2 года назад

this helped me so much thank you

@biochemfusion 3 месяца назад

Outstanding sir

@beepyho Год назад

Thank you.I'm really sure that I am good enough thanks to you.

@beepyho Год назад

Good

@beepyho Год назад

Great

@gu5ie674 3 года назад

this was amazing thankyou!

@bobbywang9223 4 года назад

Thanks for the video 👍

@slimtuleii 2 месяца назад

Thank you so much

@xdrenteria4124 5 лет назад

Our teacher made us watch this.

@itzjoemama_ 4 года назад

same

@koni6836 3 года назад

Same

@Veron68778 3 года назад

Same

@njlaotb3102 4 года назад

Thanks ❤️

@kundana2005 Год назад

Amazing video, thank you very much!

@appreciantinx4214 6 лет назад

Pedigree sounds like the dog food

@kerbygalang4509 5 лет назад

looks familiar huh, then u a dog?

@princeicio 5 лет назад

If both parents are affected by a certain trait, does that mean they're gonna pass on that particular trait to all of their children?

@kjhuncho4631 5 лет назад

if its recessive , the children might be unaffected

@user-xc2sl5il4k 4 года назад

It depends if the parents' trait is heterozygous or not, i.e. if the genotype for the trait is heterozygous then there will be a certain probability wether or not the trait is passed on or not

@cakey1668 7 месяцев назад

I think the answer is it depends. I will define 'passing on that particular triat' as 'having same phenotype as parents'. If the alelle linking to the trait is autosomal recessive, then yes. If the alelle is autosomal dominant: -If at least one parent is homozygous dominant then yes. -Otheriwise there is a 25% chance that the children have different phenotype than their parents. If the alelle is X-linked and dominant: -If the mother is homozygous, then yes. -Otherwise, all female offsprings will have the same trait as their parents. There is a 50% chance for male offsprings to not express the trait. (75% chance for trait to pass on to children) If the alelle is X-linked and recessive, then yes. The alelle cannot be Y-linked since the trait affects both parents. Please let me know if I'm wrong. I know I'm five years late but I just want to answer it

@princeicio 7 месяцев назад

@@cakey1668 I don't know much about biology or genetics, but thanks for taking the time to enlighten me

@cakey1668 6 месяцев назад

@@princeicioI'm glad to be of help!

@757_girlt5 3 года назад

Thank u

@Ahmed-bb4yp 4 года назад

How were you able to tell that they are autosomal dominant, and not autosomal recessive?

@EdmundDerwent 4 года назад

It is given in the question/statement for the pedigree. You shouldn't be asked to work this out in the question.

@PinkamyElectricwala 4 года назад

That's cause ALL the generations are affected as in if u see an affected individual and then look up to their pedigree the parents are affected so it's a dominant trait

@taylornewton5988 4 года назад

@@PinkamyElectricwala This pedigree could be showing either a recessive disorder OR a dominant disorder based on my worked solutions? For the disease to be recessive the genotypes of generation 1 would be switched with the female being homozygous recessive and the male being heterozygous resulting in a 50% chance of offspring containing the trait. Every affected person would be homozygous recessive and each non affected would be heterozygous (except for II-1 which could be homozygous doinant or heterozygous)

@kristallynn1755 2 года назад

thank you🙏🏼🙏🏼🙏🏼

@amerakkari4617 3 года назад

استاذ اونلاين خاص لك Mathmatics Physics Biology Chemistry

@sciencenerd7639 2 года назад

Very helpful, thanks so much

@frankcao7727 2 года назад

thanks

@GamererrReal 4 года назад

did he say anything about partly filled in shapes?

@maybe_magic_bird4617 4 года назад

Partly filled in is a carrier

@hatichestrange8368 6 лет назад

good

@VaakOfKhorri 2 года назад

01:40 thats what schools dont teach us

@biochemfusion 3 месяца назад

I've a confusion about offsprings? In this case you've shown 3 offsprings in 1st generation, maximum how many offsprings we can draw???? How to know how many children would be effected and how many would be normal??? Please do react

@prankie727 4 года назад

How u decided having frekel is dominanat

@emma-z 4 года назад

GOOGLE

@beamyopinta7893 6 лет назад

It's just uploaded after I took Biology exam =-=

@namitapanda3092 3 года назад

Lolol

@ccvvs Год назад

for generation 1, how do you know that the male if ff? What if they have the recessive gene of freckles but doesnt appear on their physical appearance

@ccvvs Год назад

is*

@ShiannaFury 10 месяцев назад

Freckles are a dominant gene, so they’ll always show up whether it’s FF or Ff. The male doesn’t have freckles, so he is homozygous recessive!

@fikerabigia Год назад

ion get it

@user-oo6rh1tx5i 6 лет назад

When are you going to put a translation into the Arabic language in your videos

@ItsKruski 3 года назад

but if you can speak English why have it in Arabic I understand that the majority could also need it in Arabic

@massive218 6 лет назад

pedicure

@agerncygumbo2419 3 года назад

finally get it

@leslynbriones6946 2 года назад

what is teh other genotypes for their offsprings?

@Lumenxii 2 месяца назад

5:09

@_itsjustcat 3 года назад

What if both parents show the trait but not all of their offspring show the trait??? Would both of the parents genotypes still be Ff?

@MrSlim_Gaming 6 лет назад

is it medicine or biology ?

@KeiW_ 6 лет назад

I learned this in Biology

@MrSlim_Gaming 6 лет назад

which grade? or college?

@papupradhan9920 6 лет назад

It is modern Genetics

@MrSlim_Gaming 6 лет назад

i asked about level

@KeiW_ 6 лет назад

10th Grade Biology Honors

@bryanfrausto3642 5 лет назад

Blue face baby

@Nickiisqueenofrap 5 лет назад

Yea aight I'm every woman's fantasies

@KhoiTTA 5 лет назад

Bryan Frausto bust down thotiana

@bryanfrausto3642 5 лет назад

Momma always told me I was going to break hearts stupid don be mad at me

@sherwinthirumavalan2477 6 лет назад

hey

@naysathomas1442 4 года назад

can you do a video on sex linked disorders

@austincornelius3172 4 года назад

who else is currently at an exam and cramming

@jonno9412 2 года назад

Battlepass

@srisankalpamishra3006 4 года назад

Nice!

@jbcloak1458 3 года назад

Keep your comments to yourself I’m trying to learn

@srisankalpamishra3006 3 года назад

@@jbcloak1458 😅When did I reply to you either😆

@pravdahoff1202 3 года назад

@@srisankalpamishra3006 Vik is that you

@srisankalpamishra3006 3 года назад

@@pravdahoff1202 What does that mean?

@pravdahoff1202 3 года назад

@@srisankalpamishra3006 Joe Mama Bruh Sleath 100 Lmao 🤣you 😂🤣

@kramchancel1266 Год назад

bro you guys deserve a Nobel prize

@wagishasharma2852 3 года назад

What I didn't got in weeks....that I got in just minutes....

@xlemzy 3 года назад

Ah, virtual school

@User89018 2 года назад

I am here because my college professor for bio is terrible

@mengenliu3258 3 года назад

Isnt this also autosomal recessive

@Kryshma 3 года назад

I think this is an autosomal recessive because the fact that in the 2nd generation is Aa in female and aa in male, the 3rd generation should produce atleast one heterozygous offspring. Correct me if I'm wrong.

@wumboshorts 7 месяцев назад

@@Kryshmai went straight to the comments because i thought the same thing-i think it can be either 😂

@biochemfusion 3 месяца назад

Please sir 🙏🙏

@samranhaider4815 9 месяцев назад

Presentation

@wildernesstv4210 2 года назад

It’s funny because I have to learn this in 8th grade

@sangita182 3 года назад

Just Waoooo❤️❤️❤️❤️❤️

@ash-eu3ex 2 года назад

pls tell me what to put in the exam lol i'm dying i've been watcjing this for 30mins and don't even understand a single sh*t

@Ryan-fi2ul 4 года назад

neglected to communicate there is a Y chromosome on the males

@tomxd7660 Год назад

That’s only relevant when talking about sex-linked inheritance

@trickyok5101 Год назад

Final exam in 30 minutes

@icampinbushes3672 4 года назад

Who else in Mr.Mclin watching this

@kapilsharma-ju3th Год назад

Ghanta kuch samajh nahi aaya

@Chaku-tf9ui 5 месяцев назад

You needa neurons in your brain to understand,but poor you you don’t have neurons and therefore a brain to begin with…You brainless zombie go and find a brain cuz without brain you won’t understand a thing!