You are examining a human pedigree for a trait. You notice that the trait appears in every generation; is equally likely to occur in males and females; and, when one parent is affected, about half of his or her offspring are affected. The trait is MOST likely:
A)dominant.
B)recessive.
C)epistatic.
D)produced by multiple alleles.
E)one that shows incomplete penetrance.

Question

Quizplus · Accepted Answer

The fact that the trait appears in every generation and is equally likely to occur in males and females is characteristic of a dominant trait. The fact that about half of the offspring are affected when one parent is affected is also consistent with a dominant trait.

You Are Examining a Human Pedigree for a Trait