One normal married couple had an albino son with hemophilia, and later three daughters
September 1, 2021 | education
| One normal married couple had an albino son with hemophilia, and later three daughters: one albino and two without anomalies. What are the genotypes of the parents?
1) Albinism is inherited recessively, linked to the autosome.
A – normal pigmentation, a – albinism.
Hemophilia is also a recessive disease, but linked to the sex chromosome.
XH – normal blood clotting, Xh – hemophilia.
2) Find the genotype of the son: aaXhY. Obviously, he received a recessive albinism allele from each of his parents, and a hemophilia allele from his mother. This means that both parents are heterozygous for albinism, and the mother is a carrier of hemophilia.
3) Parents have the following genotypes: AaXHXh x AaXHY
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