Question

Attached earlobes are a recessive trait in humans. In the tree below, people with attached earlobes are shaded in. Which best describes the person labeled X in the tree?

Answer 1

A male with one recessive allele

Step-by-step explanation:

a p e x :)

Answer 2

The square denotes male. One parent is recessive, so X must have at least one recessive allele. B is the right answer.