21. Evolution by Natural Selection
Descent with Modification
3:23 minutes
Problem 1b
Textbook Question
Textbook QuestionWhich of the following is an observation or inference on which natural selection is based? (A) Individuals do not vary in their heritable characteristics. (B) Only well-adapted individuals produce offspring. (C) Species produce more offspring than the environment can support. (D) Nearly all of each individual's offspring will survive and reproduce.
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