In people, a dimpled chin is an autosomal dominant trait. many famous celebrities, such as john travolta and michael and kirk douglas, have this condition. assume that the wrestler and actor hulk hogan is homozygous for the dimpled chin, and he married a woman with a round chin. they had two children, brooke and nick. what is the probability that their children will show the trait?

100%

Explanation:

Suppose B is dominant allele for dimpled chin and b is recessive allele. Hulk Hogan has homozygous dimpled chin which means that his genotype would be BB. The woman has recessive round chin which means that her genotype would be bb.

Their children : BB  X  bb =

    B      B

b   Bb    Bb

b Bb    Bb

All the offspring will receive one dominant allele from Hulk so they all will have dimpled chin. Hence, probability that their children will show the trait is 100%.

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