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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Definitions:

Leap Years

Years that are divisible by 4 (except for years divisible by 100, unless they are also divisible by 400), having 366 days to keep the calendar year synchronized with the astronomical year.

Maturity Value

The total amount that will be received at the maturity date of an investment, including the principal and any accrued interest.

365-Day Year

A method used in finance calculations that assumes all years have 365 days for the purpose of simplifying interest calculations.

Maturity Value

The amount to be paid out or the final value of an investment upon its maturity, including the principal and the interest earned.