what about the "gender" of rodents ? https://www.ncbi.nlm.nih.gov/pubmed/8888412 
'Gender' doesn't exist in anything close to the form that the term's users believe. It'll be forgotten, like "phlogiston'
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Never underestimate the idiocy of humanity. Something tells me this lunacy will prevail.
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Gender describes pronouns; pronouns do not describe gender. Pronouns describe sex. Gender: grammar turned propaganda
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might wanna check out what happ in
@McMasterU , students saying biologists have proved bio sex binary to be false.#RIPscienceThanks. Twitter will use this to make your timeline better. UndoUndo
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Or 'luminiferous aether'.
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