Species stuff

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4 Terms

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biological species concept

Species are groups that can interbreed and produce fertile offspring (doesn’t apply to fossils or asexual organisms).

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Morphological species concept –

Species are defined by physical traits (useful for fossils but can be subjective).

3
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Phylogenetic species concept

– Identifies species based on unique evolutionary history and DNA (may over-split species and relies on genetic data, which isn’t always available, and horizontal gene transfer).

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Cohesion species concept

Defines species based on genetic and ecological continuity (difficult to test and measure in many organisms).