Geneticist Geri notices that a woman exhibits trait L. With certainty, she asks the woman, "Which of your parents also exhibits this trait?" The woman is surprised that Geri knew that one of her parents has to also display trait L. Knowing which fact would have cleared up the woman's confusion?

Question

Quizplus · Accepted Answer

If trait L is governed by a dominant allele, then having just one copy of the allele (from either parent) is enough for the trait to be expressed. Therefore, at least one parent must also exhibit the trait.

Geneticist Geri Notices That a Woman Exhibits Trait L