In Biology Lab,your Class Counts the Number of People with Different

Multiple Choice

In biology lab,your class counts the number of people with different colors of hair and eyes.Your instructor says that these traits are variable and difficult to trace in each family.The reason is that these two traits depend on more than one gene,and are called

A) codominant.
B) incomplete dominant traits.
C) pleiotropic.
D) recessive.
E) polygenic.