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xeze [42]
2 years ago
7

Hemophilia is an X-linked recessive condition in which blood does not clot properly. Queen Victoria of England had one allele fo

r hemophilia. Most of her male descendants had the disorder, but few females had it. Why did hemophilia occur more frequently in Queen Victoria’s male descendants?
Biology
1 answer:
kondaur [170]2 years ago
7 0

Answer:

Because hemophilia is an X-linked recessive condition.

Explanation:

As the problem states, hemophilia is an X-linked recessive condition.

  • Meaning that in Queen Victoria's female descendants (coded XX) which inherited the Queen's one allele, for hemophilia to appear in them it would be necessary to inherit another hemophillia-carrying allele from the father.
  • The Queen's male descendants (coded XY) would always manifest hemophilia if they inherited the Queen's hemophilia allele, as they possesed only one X gene.
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