In a hypothetical environment, fishes called pike-cichlids are visual predators of large, adult algae-eating fish (in other words, they locate their prey by sight). The population of algae-eaters experiences predatory pressure from pike-cichlids. Which of the following is least likely to result in the algae-eater population in future generations?

a) selection for drab coloration of the algae-eaters

b) selection for nocturnal algae-eaters (active only at night)

c) selection for larger female algae-eaters, bearing broods composed of more, and larger, young

d) selection for algae-eaters that become sexually mature at smaller overall body sizes

Question

Damian Clay

Biology

30 March, 06:12

In a hypothetical environment, fishes called pike-cichlids are visual predators of large, adult algae-eating fish (in other words, they locate their prey by sight). The population of algae-eaters experiences predatory pressure from pike-cichlids. Which of the following is least likely to result in the algae-eater population in future generations?

a) selection for drab coloration of the algae-eaters

b) selection for nocturnal algae-eaters (active only at night)

c) selection for larger female algae-eaters, bearing broods composed of more, and larger, young

d) selection for algae-eaters that become sexually mature at smaller overall body sizes

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Answers (1)

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Zander Hurley · Answer 1

c) selection for larger female algae-eaters, bearing broods composed of more, and larger, young.

Explanation:

The least likely to result in the algae-eater population in future generations is the selection for larger female algae-eaters, bearing broods composed of more, and larger, young.