Rethinking Genitalia: We're a culture obsessed with human bodies, gender and the morphological differences between male and female. But what happens when we consider gender reversal in nature, as well as the amazing sex-reversed cave insects of the Neotrogla genus? The females of these species boast a penis-like, sperm-collecting "gynosome," which fits perfectly inside the male's sperm-offering "phallosome." Listen to this episode of Stuff to Blow Your Mind and turn everything you know about gender on its head.
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