no idea which one is the right answer...

the probability that her son will be affected is 1 in 2
the probability that her daughter will be carrier is 1 in 2

 

Im stuck between A) and C)

What's with the recent flux of genetics questions? :happy:

 

Pls keep genetic calculation coming, the more the better!

 

a) The probability that she is a carrier is 2/3.---should be 1/2
b) If she is a carrier then the probability that each of her sons will be affected is 1 in 4.---if she's a carrier, Xx, then son will be 1/2 chance to have dz
c) If she is a carrier then the probability that each of her daughters will be a carrier is 1 in 4.--daughter would be 1/2 carrier
d) Before any carrier testing is carried out the woman can be correctly informed that the probability that her first son will be affected is 1 in 4.--this one is right. possibility to be a carrier 1/2, transfer the bad one to don is 1/2, so 1/2*1/2=1/4

 

you´re absolutely right. Thanks!