The founder effect<span> occurs when a portion of the </span>population<span> (i.e. "founders") separates from the old </span>population<span> to start a new </span>population<span> with different allele frequencies. </span>Small populations<span> are </span>more<span> susceptible </span>genetic drift<span> than large</span>populations<span>, whose larger numbers can buffer the </span>population<span> against chance events.
i hope this helped u
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Answer- C Genetic Drift Geographic Isolation.
Most likely the Muscular System.
Muscles, ligament, tendons and bone all function to move the body. And organs inside the body depend on muscles as well; such as the heart, diaphragm, etc..
:) I hope this was one of your answers :) good luck!