Polygenic inheritance
A) reflects the influence of a single gene.
B) determines "either-or" traits, such as eye color.
C) cannot be studied because its influence is too broad.
D) influences behavioral and psychological traits such as intelligence.

Question

Quizplus · Accepted Answer

Polygenic inheritance refers to the influence of multiple genes on a trait, and is often seen in complex traits such as behavioral and psychological characteristics, including intelligence. Choices A and B are inaccurate as polygenic inheritance involves multiple genes, and is not limited to "either-or" traits. Choice C is also incorrect, as polygenic inheritance can certainly be studied, and has been the focus of much research in fields such as genetics and psychology.

Polygenic Inheritance