The factor that describes the few individual that are susceptible to genetic drift is : ( C ) small populations
What is a small population
Small populations consists of few individuals usually "founders" leaving their initial population ( old population ) to form new population.
This new population is more susceptible to genetic drift because of the few individuals that make up the new population. Chance events leads to genetic drift and larger population survive these events due to its numbers while small populations are more susceptible.
Hence we can conclude that The factor that describes the few individual that are susceptible to genetic drift is : ( C ) small populations
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