13. Stable allele frequency equilibria are achieved under which of the following

Question

13. Stable allele frequency equilibria are achieved under which of the
following selection models ?
AA Aa aa
a. 1 1 1+s
b. 1+s 1+s 1
c. 1+s 1 1
d. 1+s 1 1+t
e. 1 1 1


15. Genetic drift has long been a contentious issue in population genetics
with some authorities claiming that is has played a major role in the
evolutionary changes of allele frequency while other authorities gave it
only a minor role. Genetic drift is fundamentally the result of
a. limitations on the number of alleles at a locus.
b. finite population size.
c. mutation/migration-selection balance.
d. avoidance of mating between relatives.
e. Both a and d are true.

Explanation / Answer

15. d 13. a

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