Are two penises better than one? Not so, implies a study of doubly endowed earwigs. An ancestral behavioural preference for the right penis might have facilitated the loss of the left in species that arose later.
CITATION STYLE
Palmer, A. R. (2006). Caught right-handed. Nature, 444(7120), 689–692. https://doi.org/10.1038/444689a
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