What is an effect of genetic drift on a gene pool?

Genetic drift happens by chance and can make an allele disappear completely from a gene pool, even if it was a desirable trait that should have been passed down to offspring. The random sampling style of genetic drift shrinks the gene pool and therefore alters the frequency the alleles are found in the population.

population. population is the number of people or animals in a particular place. an example of population is over eight million people living in new york city.

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. the sierra madre fault zone of southern california

. the san andreas fault california