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QUESTION

A woman with Turner syndrome is found to be hemophiliac (an X-linked recessive trait). Both her mother and her father have normal blood clotting.

9.    A woman with Turner syndrome is found to be hemophiliac (an X-linked recessive trait). Both her mother and her father have normal blood clotting.

a.    Explain the simultaneous origin of Turner syndrome and hemophilia by the abnormal behavior of chromosomes at meiosis.

b.    Can you distinguish whether the abnormal chromosome behavior occurred in the father or mother? If so, which was it? If not, explain why not.

c.    Can you distinguish whether the abnormal chromosome behavior occurred in the first or second division of meiosis? If so, which was it? If not, explain why not.

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