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Ch 24-25 - Coggle Diagram
Ch 24-25
Species
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Morphological species concept, ecological species concept, phylogenetic species concept
Reproductive isolation: prevents gene flow, maintains species boundaries
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Speciation
Allopatric speciation: geographic, populations separated by barriers.
Sympatric speciation: polyploidy, habitat differentiation, sexual selection
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Permian extinction 252mya: volcanos, global warming, ocean acidification. Most marine life lost.
Cretaceous extinction: hit by asteroid, wiped out dinosaurs, mass extinction