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Continuity of life on Earth — Question 28

Original QCE Vault practice · 1 mark

Q28 · Practice questionSimple familiar1 mark

QUESTION 28

A storm kills most beetles on an island, regardless of their colour. The survivors have a different colour-allele frequency from the original population. The most direct explanation is

(A)
Directional selection for the survivors’ colour.
(B)
Mutation caused every surviving beetle to change colour.
(C)
Gene flow from the mainland.
(D)
Genetic drift through a bottleneck.
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