Two populations can be very divergent from one another, yet still have evolved n

Question

Two populations can be very divergent from one another, yet still have evolved no reproductive isolating mechanisms.

True

False

The effects of genetic drift can cause speciation in both large and small populations.

True

False

Other than reinforcement, natural selection does not play a role in speciation.

True

False

Natural selection can affect speciation between two populations found in different environments.

True

False

Reproductive isolating mechanisms usually arise for the express purpose of providing reproductive isolation.

True

False

Explanation / Answer

1. False, because the reproductive barrier is a key event in divergent evolution.

2. True, genetic drift has quick and big effect on small population and mild effect on large populations which is usually overshadowed by natural selection.

3. False, natural selection does involve in the speciation, but reinforcement increases the reproductive isolation of natural selection

4. False (it would promote the speciation)

5. True, It is a collection of mechanisms includes the behavior and physiological processes that prevent the members of two different species that cross or mate from producing offspring.

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