Peppered Moths in England Evolved into a Dark-Colored Form When

question 67

Multiple Choice

Peppered moths in England evolved into a dark-colored form when soot darkened the bark of the trees they lived on and exposed the light-colored form to predation.However,air pollution control eventually restored the moths' habitat to its original condition.What would probably have happened to the peppered moth population if the light-colored alleles had been entirely lost from its gene pool during the period when dark-colored moths were selectively favored?

• A) Mutations that would reestablish the light-colored allele in the gene pool would have occurred.
• B) The moths would have evolved behaviorally and chosen to avoid trees with light-colored bark.
• C) The moths would have changed their dietary preferences to foods that contain only light pigments.
• D) The population would have become extremely small or possibly extinct after the loss of this adaptive trait.

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