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BIOLOGY

JAMB 2008 - Question 50

Biology 2008 JAMB Past Questions - Question 50: The natural process that produces adaptive evolutionary changes is

Choose the most appropriate option for the gap .

The natural process that produces adaptive evolutionary changes is

A: mutation

B: gene flow

C: genetic drift

D: natural selection

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Correct Answer

Explanation

D It is a process whereby the fittesr individualswith favourable variation: special survival advantages are chosen by nature. Theseindividuals pass their special traits to subsequent generations who keep onimproving on the advantages. The accumulation of these special traits-in a longrun leads the formation of new species. Mutation is the only process thatactually changes the genes and so contributes to the formation of newspecies though it is not natural.