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17-Jan-2017 14:22

Individual organisms do not evolve, they retain the same genes throughout their life.When a population is evolving, the ratio of different genetic types is changing -- each individual organism within a population does not change.[gene: a hereditary unit] So, the change in frequency of dark colored moths represented a change in the gene pool.[gene pool: the set all of genes in a population] This change was, by definition, evolution.[gene: a hereditary unit] Individuals are selected.Evolution can occur without morphological change; and morphological change can occur without evolution.

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