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Which of these statements is true about adaptive evolution?


Adaptive evolution is a permanent change in a trait.


Adaptive evolution is a temporary change in a trait.


Adaptive evolution is a fluctuating change in a trait.

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Eku
In adaptive evolution, the change occurs due to a change in the genetic make-up by mutations.
Therefore, adaptive evolution is a permanent change in a trait and it allows a population to survive in unsuitable environmental conditions.
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Answer:

A.   Adaptive evolution is a permanent change in a trait.

Explanation: just did a test with the same question