07/12/2012 11:15 am ET

BPA Causes Interspecies Mating, Study Finds

Because it so closely resembles estrogen, BPA can trigger a wide array of changes to an animal's body that are normally regulated by hormones. In the shiners, it altered the size, coloring and behavior of some fish; male red shiners exposed to BPA, for example, showed less intensity in body color than unexposed males. Such changes apparently make the fish look like other species of shiners, which can

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