Question

AP bio chapter 7 evolution.

A population of organisms will not evolve if….?

Following answer to the question

(Only one answer is correct)


1:All individual variation is due only to environmental factors

2: the population size is large

3: the population lives in a habitat without competing species present

4: the environment is changing at a relatively slow rate.

Answer 1

1: All individual variation is due only to environmental factors

Step-by-step explanation:

Because genetic diversity is a precondition for evolution, a population of organisms will not evolve if all individual variation is caused entirely by environmental circumstances. There wouldn't be any variety in the population's genetic make-up for natural selection to operate on if all variation was brought on by environmental causes. Evolution is impossible without genetic variety.