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A baby boy with Klinefelter's syndrome is born to a mother who is phenotypically normal and a father who has the X-linked skin condition called anhidrotic ectodermal dyplasia (if you don't know this condition, research it). The mother's skin is completely normal with no signs of skin abnormality. In contrast, her son has patches of normal skin and patches of abnormal skin.

a. Which parent contributed the abnormal gene?
b. Using the appropriate genetic terminology, describe the meiotic mistake that
occurred. Be sure to indicate in which division the mistake occurred.
c. Using appropriate genetic terminology, describe the son's skin phenotype.
d. Name a common feature of anhidrosis.

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