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Mongrel fish is a mixture of three species

Mongrel fish is a mixture of three species

作者:柯恤  时间:2017-07-05 07:02:03  人气:

By Bob Holmes A GENETIC takeover on a scale never seen before among vertebrates is taking place in the western US. An alien fish is not only hybridising with the locals, but also breaking down the genetic barriers between once-distinct species. Such multiway hybridisation might be much more common than we thought. Dave McDonald, an evolutionary biologist at the University of Wyoming in Laramie, and his colleagues sampled DNA from three species of fish in the Colorado river basin in the south-western US – two native species, the flannelmouth and bluehead suckers, and one introduced species,