Can you answer this genetics question?!

[ll_xx_ll]

Re: Can you answer this genetics question?!

@princessjojo

The answer is 12.5% or 1/8

The brother has hemophilia. So this makes him X(h) Y
This implies that the mother of this boy must be a carrier: X(H) X(h) and therefore, a carrier, but normal as stated.
The father of the boy was stated to be normal, which means he is: X(H) Y
Therefore, their daughter (pregnant female) should be either X(H)X(H) or a carrier X(H) X(h). Therefore, she has a 0.5 chance of being a carrier.

IF she is a carrier, then the probability that she will have a child with hemophilia is 1 in 4: 0.25

Multiply the p(pregnant female is a carrier) * p(child with hemophilia) to get total probability of her having a child with hemophilia:

0.5 * 0.25 = 12.5%

u knew the answer phir tumne itna kaam karvaaya:mad:

n here i thot u needed hw help