13. What are all possibilities
of genotypes and phenotypes
formed in the combination of
alleles responsible for the
production of factor VIII?

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Considering the alleles Xh X, where
Xh represents allele that conditions
hemophilia , in women the possible
are XX, XXh and . In
men the possible are XY and
XhY. the phenotypes, factor
VIII produced in every individual
at least one nonaffected chromosome.
So the women and X Xh and
men XY are normal. women XhXh
and men have the disease.