Question

Bill's mother had to cover up when she was outside in the sun because she had xeroderma pigmentosum. Bill's father was diagnosed with emphysema due to α1 antitrypsin (α1AT) deficiency when he was 30 years old. Bill got engaged to Sally, whose mother also had xeroderma pigmentosum. Before they marry, they consult a genetic counselor. Sally informs the counselor that her father was always short of breath, so he conducts genetic testing and determines that she is a carrier for α1AT deficiency. If Bill and Sally had a child, what would be the risk that the child would have: a.) xeroderma pigmentosum? b.) α1AT, but not xeroderma pigmentosum? c.) both α1AT and xeroderma pigmentosum? d.) α1AT, xeroderma pigmentosum, or both?

          Bill's mother had to cover up when she was outside in the sun because she had xeroderma pigmentosum. Bill's father was diagnosed with emphysema due to α1 antitrypsin (α1AT) deficiency when he was 30 years old. Bill got engaged to Sally, whose mother also had xeroderma pigmentosum. Before they marry, they consult a genetic counselor. Sally informs the counselor that her father was always short of breath, so he conducts genetic testing and determines that she is a carrier for α1AT deficiency. If Bill and Sally had a child, what would be the risk that the child would have:
a.) xeroderma pigmentosum?
b.) α1AT, but not xeroderma pigmentosum?
c.) both α1AT and xeroderma pigmentosum?
d.) α1AT, xeroderma pigmentosum, or both?

Added by Alfonso V.

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