LIFE SCIENCE

OBJECTIVE LIFE SCIENCE

EVOLUTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A chance occurrence that negatively affects a population because the population is small.
A
genetic drift
B
mutation
C
speciation
D
migration
Explanation: 

Detailed explanation-1: -The bottleneck effect occurs when only a few individuals survive and reduces variation in the gene pool of a population.

Detailed explanation-2: -Typically, genetic drift occurs in small populations, where infrequently occurring alleles face a greater chance of being lost. Once it begins, genetic drift will continue until the involved allele is either lost by a population or until it is the only allele present in a population at a particular locus.

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