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Chapter 19: The Evolution of Populations

All life on Earth is related. Evolutionary theory states that humans, beetles, plants, and bacteria all share a common ancestor, but that billions of years of evolution have shaped each of these organ

1. Chapter 19: The Evolution of Populations

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increase in frequency of beneficial alleles and decrease in deleterious alleles due to selection

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(also, gene frequency) rate at which a specific allele appears within a population

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when individuals tend to mate with those who are phenotypically similar to themselves

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magnification of genetic drift as a result of natural events or catastrophes

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