Pssst all categories, including ones used by scientists, are made-up "constructs" defined by the intentions of the people categorizinghttps://twitter.com/gogreen18/status/883906090781384704 …
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Plenty of examples where both types of gametes are motile and seek each other out, or both are non-motile and combined by other methods
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And that in turn predicts v little about the macro organisms that make smaller gametes vs bigger ones ("males" and "females")
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In humans? It's not universal? Or in mammals? Can you point me to literature where a human has been conserved any other way?
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