Polygenic traits include
A) eye color and hair colors other than pure blond or red.
B) albinism and brachydactyly.
C) inability to roll the tongue into a U-shape.
D) curly hair and eye color.
E) blood Rh factor and color blindness.

Question

Quizplus · Accepted Answer

Eye color and hair colors other than pure blond or red are examples of polygenic traits because they are controlled by multiple genes. Albinism and brachydactyly are not polygenic traits, as they are caused by the inheritance of a single mutated gene. The inability to roll the tongue into a U-shape is an example of a simple inherited trait, as it is determined by a single gene. Curly hair and eye color are also polygenic traits. While blood Rh factor and color blindness are inherited traits, they are not polygenic, as they are determined by a single gene.

Polygenic Traits Include