Eye color, hair color, and skin color are polygenic traits. Polygenic traits result from recessive genes.
many genes.
codominant genes.
epistatic genes.

Scientists discovered fossils in several layers of the earth you see here. they found fossils of algae, snails, and clams in layer d. given that information, where do you think they found fossil evidence of simple land plants and amphibians? a. a b. e c. f d. g