No Sex Needed: All-Female Lizard Species Cross Their Chromosomes to Make Babies

Since the 1960s scientists have known that some species of whiptail lizards need a male even less than a fish needs a bicycle. This all-lady lizard species (of the Aspidoscelis genus) from Mexico and the U.S. Southwest manage to produce well-bred offspring without the aid of male fertilization. [More]

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