'Prevent mating' presentation slideshows

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Species and Populations

Species and Populations. Biology/ Env S 204 Spring 2009. Species and Populations--Introduction. Species concepts = how species are defined Population biology = how individuals are distributed, how they vary. Species and Populations--Introduction.

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New species can arise when populations are isolated

New species can arise when populations are isolated. Populations become isolated when there is no gene flow. Isolated populations adapt to their own environments. Genetic differences can add up over generations. Speciation - the rise of two or more species from one existing species.

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