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Which of the following is a true statement concerning genetic variation?
a. It must be present in a population before natural selection can act upon the population.
b. It tends to be reduced by the processes involved when diploid organisms produce gametes.
c. It is created by the direct action of natural selection.
d. A population that has a higher average heterozygosity has less genetic variation than one with a lower average heterozygosity.
e. It arises in response to changes in the environment.
a. It must be present in a population before natural selection can act upon the population.
Explanation:
Genetic variation is the difference in the DNA sequences in individuals, which makes a member of a species different from another member of the same species. It can also be said to be the di
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