What are the three observations of natural selection?
A) Species change and adapt based on environmental pressure, individuals change within their lifetime, and offspring inherit the changes.
B) Genetic drift, gene flow, and mutations provide the change necessary in populations that affect future generations.
C) Organisms produce more offspring than survive, populations vary, and traits are inherited.
D) The number of adults tends to remain the same over time, inheritance provides all of the genetic variation needed for future generations, and natural selection works on only the best of those adults in each generation.

Question

Quizplus · Accepted Answer

The three observations of natural selection are populations vary, organisms produce more offspring than can survive, and traits are inherited. Option A is partially correct but only the third observation is mentioned. Option B lists mechanisms that can cause genetic variation, but not observations of natural selection. Option D is incorrect as natural selection works on all individuals, not just the best ones.

What Are the Three Observations of Natural Selection