Would a speciation event require them to be unable to interbreed, or is it enough to simply show that they tend not to?
Groups that could produce offspring with outsiders but that do not breed with them are sometimes called '
demes':
quote:
In biology, a deme is a term for a local population of organisms of one species that actively interbreed with one another and share a distinct gene pool. When demes are isolated for a very long time they can become distinct subspecies or species.
Edited by Modulous, : No reason given.
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