dr crowder is one of the best teachers I have ever had. so glad I took her for human heredity. really wish I could've had her for genetics.
@beckwilde7 жыл бұрын
thank you so much. i was very confused. Wish i had found this video before my first midterm
@jamiecyrus88598 жыл бұрын
Thank you so much for posting this video! I was so confused when it came to this topic and you cleared this subject up for me!
@masudanasir1617 Жыл бұрын
wow, this is actually the best video I watched about the pedigree calculating probabilities.
@iconsequentialist6 ай бұрын
Really maam !!!! I needed this for my step 1 exam ❤❤❤
@snigdhabanerjee53956 жыл бұрын
Thank you so much ma'am..u are really just awesome..u clear all my confusion..plz make make more videos on probability problems...i wish u can tech me from my college days...
@mziwonkexola37076 жыл бұрын
Superbly done...thank u Dr Crowder frm South Africa
@sinenhlanhlasikhakhane73275 жыл бұрын
Still confused as fuck tho
@carlysteeveaugustin12806 жыл бұрын
Good job Dr!!!I wish I could have seen this video while I was studying Genetics for Step 1.Thanks for sharing!!!I will share it with some of my IMGs friends.
@andrewcao61355 жыл бұрын
Carly Steeve Augustin hey how are you bro? I'm also a med student. What med school are you attending?
@abdulrahmanomar60213 жыл бұрын
YOU ARE THE BESTTT
@victoriaaquilino35295 жыл бұрын
Genetics grade = saved
@sara979794 жыл бұрын
Thanks
@sangitajana96664 жыл бұрын
Thank you... I did well in my exam..
@firdausahmed5814 жыл бұрын
Thank you ma'am
@alshaimaa045 жыл бұрын
Thanks a lot..you are the best
@ramakantarana26564 жыл бұрын
Thank you
@mishti83126 жыл бұрын
Thnx a lot for this useful vedio
@rahatamna96054 жыл бұрын
Im confused, isnt the probability of the parents being carriers is 1/2?
@finnhuizing84403 жыл бұрын
No, because you are sure the parents don't have the rr genotype, as they don't have the disease, so you can just leave that out of your calculations :D
@edithiwugoh9617 жыл бұрын
very resourceful
@VidaObeng-rv3mh5 ай бұрын
Why is it that this we didn't ignore the RR but added it to the probability making it 1/4 and rather not 1/3 for AA
@mariaorsic97635 жыл бұрын
Fantastic! Do you private tutor? Be glad to do it on Skype or Zoom! I need help! Thanks!
@9yassy98 жыл бұрын
thank you, this video helped a lot!
@jjjaaapppii4 жыл бұрын
Plzz explain pedigree
@hhykk4 жыл бұрын
Why A B are Rr heterozygous ? Why not RR and Rr
@jjjaaapppii4 жыл бұрын
👍👍💓
@hansanikularatne52874 жыл бұрын
Could someone please answer this : Why isn't the probability of being a carrier is 1/2 but 2/ 3? 1/ 4 = exhibits trait/ All 2/3 = carriers / the ones who do not exhibit trait. Why is the denominator of second ratio shouldn't be 4? ( Which means out of all of them) If impossibilities are removed when calculating the first ratio it would be 1/1 which is wrong. Why do u remove impossibilities only for the second ratio??
@twerkformemes4 жыл бұрын
The probability of being a carrier is 2/3 because there is a 2/3 possibility that the recessive allele (Rr) was inherited from their heterozygous parents. Looking at the punnet sqaure, we see that the possible genotypes if parents A and B were to mate are: 1/4 rr (carries the disease), 2/4 Rr (carries the recessive allele) and RR (no recessive allele, no trait expressed) From the pedigree, we know that both parents are unaffected, leaving only 3/4 genotypes that are possible. RR and Rr. Looking at the punnet square, we can see that there is a 1/3 chance of parent A inheriting the RR genotype and a 2/3 chance of parent A inheriting the Rr genotype. The same goes for parent B. Since We know that it it is an autosomal recessive disease (meaning the kid's genotype must be rr) we know that neither parent can have the RR genotype because the child would end up not expressing the trait and there is no way the child could inherit the rare autosomal disease. So that leaves us with the 2/3 chance that the parents are Rr. We then multiply that 2/3 by the chance of the heterozygous parents having a child with the genotype which is 1/4. So youre going to get (2/3 * 2/3 * 1/4)
@hansanikularatne52874 жыл бұрын
@@twerkformemes Thanks a lot!!!
@alexcaymans8 жыл бұрын
great video! :-)
@aryan77672 жыл бұрын
i dont understnad hwy we are just calculating probably that the parent is hetrogenous
@BrodyBergeson6 ай бұрын
is nobody going to say that those car are fucking orange