Question

A single gene that controls the expression of more than one trait is said to show ______.

Options

• Multiple allelism

• Polygenic inheritance

• Incomplete dominance

• Pleiotropism

Answer 1

A single gene that controls the expression of more than one trait is said to show pleiotropism.

Explanation:

Pleiotropy occurs when a single gene controls many traits. The gene responsible for the round and wrinkled texture of pea seeds similarly affects the size of starch grains.