Evolution by natural selection is
A) constantly occurring at the same rate in all organisms.
B) a rare event that has never been observed by scientists.
C) a process that has occurred only in the past.
D) currently occurring but only in scientific laboratories.
E) a process that occurs as a result of differences in fitness.

Question

Quizplus · Accepted Answer

Natural selection is an ongoing process in nature, driven by differences in reproductive success (fitness) among individuals due to variations in their traits. This process is not confined to the past, does not occur at a uniform rate across all organisms, has been observed in nature (not just in laboratories), and is not considered a rare event.

Evolution by Natural Selection Is