The most basic test for are A and B being the same species is can A and B (assum... | Hacker News

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		Rhapso on June 23, 2011 \| parent \| context \| favorite \| on: Why is there only one human species? The most basic test for are A and B being the same species is can A and B (assuming opposing genders) have fertile offspring.

gnaritas on June 23, 2011 [–]

Actually I believe it's do A and B breed naturally in the wild. Not can they breed, but do they breed.

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