CBC News - Technology & Science - Polygamy produces more virile mice: study
Having multiple sexual partners leads mice to produce more fertile offspring, a new study has found.
The research, published in BioMed Central's open access journal BMC Evolutionary Biology, shows that sperm from polygamous mice are better competitors in the race for the egg.
Renee Firman and co-author Leigh Simmons at the Centre for Evolutionary Biology at the University of Western Australia used the naturally polygamous house mice to show that sperm from rival males compete to fertilize females.
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