Biology / Bio 1707 · Atom · ~20 seconds
Habitat and Behavioral Sympatric Speciation
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Sympatric speciation can also proceed without chromosomal change, as when a subgroup shifts to a new resource or habitat and breeds increasingly among itself.
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Cichlid fish in one lake diverging in diet and depth, breeding within their own feeding group, can sympatrically speciate over time.
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This route needs no polyploidy — habitat divergence within one location can isolate breeding on its own.
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