Question

Genetic drift and inbreeding are both possible in small populations. Which of the following statements truly describes possible outcomes of genetic drift and/or inbreeding?

a) Inbreeding alters allele frequencies, decreases frequencies of heterozygotes, decreases genetic variation

b) Inbreeding decreases frequencies of heterozygotes but doesn’t decrease genetic variation

c) Inbreeding alters allele frequencies, alters frequencies of heterozygotes, and decreases genetic variation

d) Genetic drift alters allele frequencies, decreases frequencies of heterozygotes, and decreases genetic variation within populations

e) Genetic drift alters allele frequencies, decreases frequencies of heterozygotes, and decreases genetic variation between populations

f) Both a and e

g) Both b and e

h) Both c and e

Answer 1

F is the right answer.

Because genetic drift leads to random fixation of alleles. This leads to alter the allelic frequency because there is found increase in homozygotes in the population. This leads to reduce the genetic variation in the population. This decreases heterozygotes in the population.

Inbreeding is defined as the meeting between the individual. This leads to increase the homozygotes in the population. Hence there is found change in the allelic frequency. This leads to reduce genetic variation in the population.

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