How Many Sexes Are There?
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The issue of gender verification is not new to competitive sports. Yet how can we define biological sex? And how many sexes are there? As the 2016 Rio Olympic Games get underway, CNRS News explores this sensitive and complicated topic.
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Are Acne Scars More Common in Males or Females?
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Age groups including division into sexes, n(%).
How many genders do people have in total? - Quora
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How Many Genders are There Anyway?, by Daniel Goldman
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How many chromosomes does a human sex cell have?
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Non-Binary Brain Goes brrrrrrrrrr - Imgflip
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Sexual differentiation - Wikipedia
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Sex differences in immune responses
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Biological sex is binary, even though there is a rainbow of sex
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Opinion Why Sex Is Not Binary - The New York Times
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Are Identical Twins Always the Same Sex?
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How many genders are there originally? Historically, most
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Study: Biology Blurs Line Between Sexes, Behaviors