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Firdavs [7]
3 years ago
11

Hemophilia is a sex-linked recessive trait in humans. If a father and a son are both hemophiliacs, but the mother is normal, her

genotype must be____. (Note: the H's are superscripts.) * XhXh XHXh XHXH XhY
Biology
1 answer:
saul85 [17]3 years ago
7 0

Answer: XHXh (Note: the H's are superscripts.)

Explanation:

Hemophilia is a sex-linked recessive trait which means that the males having one altered copy of the gene is enough to cause the medical condition( as they have only one X chromosomes and females have two)

In this case the genotype of father and son is such that they are affected by hemophilia.The son has mother's X chromosome and father's Y chromosome.

XhY is the genotype of father and son. As mother would be heterozygous because she is not affected, her genotype will be XHXh.

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