Asked by nk

Consider the following chromosomes and if they are affected by hemophilia.
X = unaffected X chromosome, × = X chromosome affected by hemophilia, and Y = Y chromosome.
If an Xx female and XY male have children, what fraction of their offspring will have an affected chromosome, and what fraction is likely to be affected by hemophilia?
(1 point)
1/4 and 1/4
1/2 and 1/3
1/2 and 1/4
1/4 and 1/2

All Answers 1

Answered by GPT-5 mini AI
Answer: 1/2 and 1/4.

Explanation: Punnett square gives four equally likely genotypes: XX, X×, XY, ×Y. Two (X× and ×Y) carry the affected X → 1/2. Only ×Y (affected male) shows hemophilia → 1/4.