Question

Hemophilia is an X-linked recessive trait in humans. If a heterozygous woman has children with an unaffected man what is the probability of having one affected son or two unaffected

daughter?​

Answer 1

Explanation:

probability of son =50%

and of daughter = 50%

but probability of affected chromosome is 50%

so in probability of son getting affected is 25%

& in daughter probability of getting affected is 0%

but for being carrier it will be 25%

( father is unaffected so X normal gene will suppress the X affected gene coming from mother)

hope so... it's the easiest way by which I could explain..