Essay
A large family exhibits a previously undiscovered trait: green hair. One parent has the trait as do 6 of their 12 children (50%). (a) Satisfy yourself that this result could be produced by either one of two situations: Green hair is caused by a dominant allele, and the green-haired parent has one copy of that allele; OR green hair is a recessive trait; the green-haired parent is homozygous and the other parent is heterozygous. (b) How might we determine which one of these possibilities is true?
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