Jumping Spider Dances:
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Principles of Animal Behavior:
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a. For both to occur, there must be variation in a trait or traits within a population.
b. Variation in traits must be heritable (genetically based).
c. Selection operates when individuals with certain variations have more offspring than other individuals with other variations.
d. Selection operates between individuals of the same species.
e. In both types of selection, direct competition between individuals must occur.
Correct!!! This is the only statement that is NOT a similarity of sexual and natural selection. Selection can occur even if there is no direct competition between individuals. Instead, selection occurs when individuals with certain traits have more offspring than other individuals with different traits; these traits must be heritable.
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