A boy with Klinefelter syndrome (47 chromosomes, XXY) is born toa mother who is phenotypically normal and a father who has theX-linked skin condition called anhidrotic ectodermal dysplasia(AED). The mother's skin is completely normal with no signs of theskin abnormality. By contrast, her son has patches of normal skinand patches of abnormal skin.
a) What are the genotypes of the mother and the father?
(b) What is the genotype of the son?
(c) Which parent contributed the abnormal gamete? Brieflyexplain how you determined the parent.
(d) What phenomenon occurred during meiosis to produce thisabnormal gamete, and at which division of meiosis (1st or 2nd) didit occur? Briefly explain how you determined which division wasaffected.
