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Researchers Create One-Parent Mouse

Scientists in Japan prove that it is possible to get a live, fertile mouse by activating an egg containing only DNA from female mice. The process of getting an unfertilized egg to start dividing is called parthenogenesis. Although many non-mammalian species reproduce this way, the Japanese mouse is the first known incidence in mammals. NPR's Joe Palca reports.

Copyright 2004 NPR

Joe Palca is a science correspondent for NPR. Since joining NPR in 1992, Palca has covered a range of science topics — everything from biomedical research to astronomy. He is currently focused on the eponymous series, "Joe's Big Idea." Stories in the series explore the minds and motivations of scientists and inventors. Palca is also the founder of NPR Scicommers – A science communication collective.