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Evolutionary biology

Caught right-handed

Nature volume 444, pages 689–692 (2006)Cite this article

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.

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Figure 1: Earwig penis number, orientation and evolution.

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  1. Department of Biological Sciences, University of Alberta, Edmonton, T6G 2E9, Alberta, Canada

    A. Richard Palmer

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  1. A. Richard Palmer
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Palmer, A. Caught right-handed. Nature 444, 689–692 (2006). https://doi.org/10.1038/444689a

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