Question

Which of the following is an example of stabilizing selection? a. British land snails mainly have two different phenotypes. b. Swiss starlings usually lay four or five eggs, thereby increasing their chances of more offspring. c. Drug resistance increases with each generation; the resistant bacteria survive, and the nonresistant bacteria get killed off. d. All of these are correct.

          Which of the following is an example of stabilizing selection?
a. British land snails mainly have two different phenotypes.
b. Swiss starlings usually lay four or five eggs, thereby increasing their chances of more offspring.
c. Drug resistance increases with each generation; the resistant bacteria survive, and the nonresistant bacteria get killed off.
d. All of these are correct.

Added by Chad A.

Biology for AP Courses

Julianne Zedalis, John Eggebrecht

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Solved by Expert Adi S

05/07/2023

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a. British land snails mainly have two different phenotypes - This is an example of disruptive selection, not stabilizing selection, as it favors two extreme phenotypes. b. Swiss starlings usually lay four or five eggs, thereby increasing their chances of more Show more…

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Which of the following is an example of stabilizing selection? a. British land snails mainly have two different phenotypes. b. Swiss starlings usually lay four or five eggs, thereby increasing their chances of more offspring. c. Drug resistance increases with each generation; the resistant bacteria survive, and the nonresistant bacteria get killed off. d. All of these are correct.