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Description:Greenstein Received Nov 15; Accepted Jan Abstract In this study, we addressed why Caenorhabditis elegans males are inefficient at fertilizing their hermaphrodites. During copulation, hermaphrodites generally move away from males before they become impregnated. The hermaphroditic mode of reproduction could potentially relax selection for genes that optimize male mating behavior. We examined males from hermaphroditic and gonochoristic male—female copulation Caenorhabditis species to determine if they use different sensory and motor mechanisms to control their mating behavior.
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