Multiple choice

Which of the following terms is not correctly defined?

  1. Population bottleneck : A sharp reduction in size of a population due to environmental random events or human activities

  2. Genetic drift : The changes in the frequency of an allele because of linkage with a positively selected allele at another locus

  3. Microevolution : The changes in allele frequencies that occur overtime within a population

  4. Molecular evolution : The change in the sequence composition of cellular molecules such as DNA, RNA, and proteins over long periods of time

  5. Habitat fragmentation : The emergence of discontinuities in an organism's preferred environment causing population fragmentation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Genetic drift is the change in the frequency of an allele in a population due to random sampling. Genetic hitch hiking refers to changes in the frequency of an allele because of linkage with a positively selected allele at another locus.

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