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29 Sep 2019
A study of X-chromosome traits in pedigrees showing affected persons and both their parents provides some indication of the source of the X-chromosome in aneuploid individuals, individuals with abnormal chromosome numbers due to non-disjunction during gametogenesis. In one family, unaffected parents produce 4 children: two normal females, one normal male and one red-green color blind male. The affected male has an XXY chromosome constitution. Red-green color blindness is a recessive trait. Indicate the source of the X-chromosome in this male and diagram the meiotic event giving rise to the affected male. If possible, indicate whether the event occurred in meiosis I or meiosis II.
A study of X-chromosome traits in pedigrees showing affected persons and both their parents provides some indication of the source of the X-chromosome in aneuploid individuals, individuals with abnormal chromosome numbers due to non-disjunction during gametogenesis. In one family, unaffected parents produce 4 children: two normal females, one normal male and one red-green color blind male. The affected male has an XXY chromosome constitution. Red-green color blindness is a recessive trait. Indicate the source of the X-chromosome in this male and diagram the meiotic event giving rise to the affected male. If possible, indicate whether the event occurred in meiosis I or meiosis II.
Collen VonLv2
29 Sep 2019
