In grassy fields, light-banded British land snails escape bird predators. In forested areas, the snails with darker shells have the advantage. What type of selection is at work?

Name: In grassy fields, light-banded British land snails escape bird predators. In forested areas, the snails with darker shells have the advantage. What type of selection is at work?
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Question

Quizplus · Accepted Answer

Disruptive selection is at work as two distinct phenotypes (light-banded and dark-shelled) have a selective advantage in different environments.

In Grassy Fields, Light-Banded British Land Snails Escape Bird Predators