Albinism, lack of pigmentation in humans, is an autosomal recessive disorder. a normally pigmented woman who has an albino uncle wishes to marry a phenotypically normal man whose sister is an albino. (assume that these are the only individuals known to be albino in the two families) what is the probability that the couple's first child is an albino? unless there is evidence to the contrary, all individuals marrying into the family are assumed to be homozygous.