How similar do DNA sequences need to be for 2 organisms to be considered the same species? And how is this decided

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Arielle Clayton

Biology

24 January, 10:37

How similar do DNA sequences need to be for 2 organisms to be considered the same species? And how is this decided

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Higgins · Answer 1

According to the biological species concept, organisms belong to the same species if they can interbreed to produce viable, fertile offspring. Species are separated from one another by prezygotic and postzygotic barriers, which prevent mating or the production of viable, fertile offspring.