How does gene flow, genetic drift, and natural selection change the composition of the gene pool?

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Of those three processes, gene flow is the least related because gene flow will introduce new genetic coding into an existing population. The reason for this is because of what gene flow is. Gene flow occurs when there is a movement of genetic material from one population of organisms to another population. Migration is a simple mechanism by which this can work. Another mechanism would be pollen being blown into a new location. As that genetic material moves into a new location and population, it is introducing genetic variation into that...

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