19.A haemophilic male marries a homozygous normal female. What is the percentage of their son to become hemophilic? A. 0% B. 50% C. 75% D. 25%

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Muskan Anand

1 year ago

Option A Here Man is hemophilic which means his X chromosome is defective, and the mother is normal, so in the son X chromosome definitely comes from mother, but not from father so the answer is 0%.

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