A key concept in evolution is that all mutations are
A) random.
B) neutral.
C) deleterious.
D) either deleterious or beneficial.

Question

Quizplus · Accepted Answer

Mutations occur randomly and can be caused by various factors such as environmental factors, errors during DNA replication, and chemical or radiation exposure. While some mutations can be beneficial, most mutations are either neutral or deleterious. Therefore, option D is not the best choice as not all mutations are beneficial or deleterious. Option B is not the best choice because neutral mutations are not uncommon, but not all mutations are neutral. Option C is not the best choice because not all mutations are harmful or deleterious.

A Key Concept in Evolution Is That All Mutations Are