Epicanthus is folding of the upper eyelid. It is inherited as an autosomal dominant trait. Butch is homozygous for epicanthus but his wife Jeri does...

Epicanthus is folding of the upper eyelid.  It is inherited as an autosomal dominant trait.  Butch is homozygous for epicanthus but his wife Jeri does not have the trait.  What is the probability of their first offspring having epicanthus?

            a) 0

            b) 1/4

            c) 1/2

            d) 3/4

            e) 1.0

ExplanationAs epicanthus is an autosomal dominant trait, it means one dominant allele will be sufficient for theappearance of the trait. However, all normal will be homozygous recessive. Thus the...