
The Greenish Warbler was long considered an idealized example of a single species, which diverged into two and expanded its range. It has been found that this species has a much more checkered family history than biologists previously realized. Ring species are a continuous loop of related populations, each adapted to its local environment, with two terminal populations in the loop meeting but now unable to mate. But an in-depth genomic analysis published today ...

via Medindia Health News
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