Scientists sequence worm from an exclusively asexual species that originated approximately 18 million years ago—making it one of the oldest living lineages of asexual animals known. Study reveals how it escaped the evolutionary dead end usually met by organisms that don’t engage in sex.

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Scientists sequence worm from an exclusively asexual species that originated approximately 18 million years ago—making it one of the oldest living lineages of asexual animals known. Study reveals how it escaped the evolutionary dead end usually met by organisms that don’t engage in sex.