a) Child #4 is a son who has hemophilia. (He is XY, so he's a boy, and he has one "h", so has hemophilia (nothing on the Y to block it)) Using the chart at right, determine what sex child #4 is and whether they have hemophilia or not.
a) Child #4 is a son who has hemophilia. (He is XY, so he's a boy, and he has one "h", so has hemophilia (nothing on the Y to block it))
b) Child #4 is a son with normal blood clotting
c) Child #4 is a daughter with normal heterozygous blood clotting.
d) Child #4 is a daughter who has hemophilia.
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