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Fierce female moles have male-like hormones and genitals. We now know how this happens.

  • Written by Jenny Graves, Distinguished Professor of Genetics and Vice Chancellor's Fellow, La Trobe University
Fierce female moles have male-like hormones and genitals. We now know how this happens.Shutterstock

Moles live a tough life underground. As a result, they’ve evolved helpful adaptations, such as excavator-like claws. Female moles in particular have evolved an unusual strategy: high levels of the male hormone testosterone.

This is an evolutionary advantage. It produces stronger muscles for digging and foraging and aggression, to...

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