BLOOMINGTON, Ind. -- The coevolutionary struggle between a New Zealand snail and its worm parasite makes sex advantageous for the snail, whose females favor asexual reproduction in the absence of ...

Sexual reproduction allows organisms to mix up their genes and develop new adaptations to survive a harsh and ever-changing environment. Under nutrient-rich conditions, the worm C. elegans is ...

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WORMS contaminated by radioactivity from the Chernobyl nuclear accident have started having sex with each other instead of on their own. According to Ukrainian scientists, they may have changed their ...