Natural Selection for Traits That Keep Distinct Populations from Reproducing

question 31

Multiple Choice

Natural selection for traits that keep distinct populations from reproducing with each other is called reinforcement. When is reinforcement beneficial?

• A) when prezygotic isolating mechanisms are in place
• B) when populations would otherwise fuse over time
• C) when hybrids have lower fitness than either parent population
• D) when one population could be overwhelmed by the other

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