late but it's because affected mothers can have affected daughters. The rule states that affected sons have affected mothers and affected fathers will always have affected daughters, but it never says that affected mothers can't have affected daughters. The reasoning behind this specific wording is that affected fathers simply cannot have affected sons because the fathers give the 'y' chromosome and not the diseased 'x'. However, mothers have 2 'x' chromosomes and since this particular tree is dominant, she can give one of the diseased 'x' chromosomes to her daughter. The whole reasoning as to why affected sons must have affected mothers is that they can't get the affected 'x' from their father because they get the 'y' from their father, so the affected 'x' HAS to come from the mother. However, the affected daughter can get the affected 'x' from either mom or dad.
You're a talented teacher not every one has that talent of teaching a hard topic and making it look easy. Thank you gor your time and material
I could not understand my professor in two sessions. You video made me an expert. Thank you, Sir!!!
a very systematic and organized approach! thanks
I just watched all your videos on pedigrees thank you this helped a lot
thank you very much you single-handedly saved me from failing my test
This is just what I needed. Thank you, Sir!
Teaching is a gift that not everyone has. You clearly have it
Made it so easy!
Thanks a lot :)
:P
Really good! Appreciate the explanation
great video!
Thank You Sir
You Look It So Easy...
great video!! helped me a LOT!!!
No# ambiguity
Due regards .
Love from Kashmir.
thanks dude, you saved my bio grade :)
You make it easy ...
Thanks ....
Why isn't generation 4, person 10 affected..if the mother is affected, shouldn't the daughter also br affected since the trait is x-linked dominant?
i got good mark in Medical genetics :))
thank you sir
Congrats
Thank you very much sir , that helped me alot
This was helpful. Thanks
You're the man!
AMAZING!!!!!!!!!
thank you so much!
thank you so much sir
Thank you !!!
you teach well sir
Thanks a million :)
IV-3 shouldn't be unaffected ?? or am I just confused, love ur videos
the daughters wont be affected but carriers unless the mother is affected as well
I like it all but I hope he gets a glass board so he doesn’t covers 90% of the board
it is very helpful though the last generation 4-7 makes it wrong.
Thank you sir!
Thanks man!
thank you so much
Thank You Mate
thanks Sir
Genotype II-1 , III-1, aa are confusing to me. How did they get aa when father doesn't have one ''a''.
Adrian Smidt because they are unaffected
Thank you, brilliant 10/10.
II-4 doesn't have a infected mother(I-2)? maybe
no, cos II-4 is married with II-3, he doesn't belong to that rule, because he's parent aren't shown, he's only married into the family
IV 4 and V 4 and 6 do not make sense based off his explanantion
late but it's because affected mothers can have affected daughters. The rule states that affected sons have affected mothers and affected fathers will always have affected daughters, but it never says that affected mothers can't have affected daughters. The reasoning behind this specific wording is that affected fathers simply cannot have affected sons because the fathers give the 'y' chromosome and not the diseased 'x'. However, mothers have 2 'x' chromosomes and since this particular tree is dominant, she can give one of the diseased 'x' chromosomes to her daughter.
The whole reasoning as to why affected sons must have affected mothers is that they can't get the affected 'x' from their father because they get the 'y' from their father, so the affected 'x' HAS to come from the mother. However, the affected daughter can get the affected 'x' from either mom or dad.
pleeessssssssssssssss sir more video for me about inhiretance
how a father with x linked dominant will exist ! ?
He forgot what he was teaching at the last part.
Shouldn't Aa be a carrier?
in dominant there are no carriers , only affected.
||-1 can't have aa bcz male have AY.
does X-linked same as sex linked? thanks
Yes, they are both the same deal.