Sexes: Leapin' Lizards!

Lesbian reptiles act like males

Readers of science journals know a good deal about bisexual aphids, "homosexual" gulls, and "transvestite" fish, species in which the male adopts the coloration and movements of the female to trick other males. Some researchers argue that every expression of human sexuality has some sort of analogue in the animal world. But even jaded followers of animal sex studies will have to admit that a Harvard team has now discovered something really new: "lesbian" lizards that copulate like males.

So far biologists have identified 27 kinds of parthenogenetic...

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