14. Natural selection

        a. usually leads to adaptation.

        b. is the process whereby organisms who are "best fit" survive and leave more offspring.

        c. favors those organisms that are better able to survive and reproduce in a particular environment.

        d. is a mechanism by which evolution occurs.

        e. All of these statements are correct.

Note that choice (a) says "usually" leads to adaptation.  Can you name another outcome of natural selection other than adaptation?

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Emma Erdahl, Associate Professor of Biology
Northern Virginia Community College
Revised 8/23/00