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Biology 7 Online
OpenStudy (anonymous):

describe the four sources of variation for organism that reproduce sexually

OpenStudy (anonymous):

1. Gene Mutation- change in a gene 2. Genetic recombination- formation of new combination of alleles 3. Migration- an individual with new alleles moves into the existing population 4. Genetic drift- certain traits in individuals may be removed from the gene pool if the individuals die, causing a "shift" in the allele frequency within the population

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