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by RoyalHenOil
1096 days ago
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>Men == people with y chromosome is something that has been used for thousands of year (in the context of scientific writing) The pattern of sexual inheritance in humans was only discovered in the 1920s, and the link between sexual inheritance and the X and Y chromosomes was not discovered until 1959. (Before that, sex was identified based on secondary sex characteristics, which do not perfectly adhere to the XX/XY inheritance system.) Scientific research journals date back only to the 1600s, and they did not develop the rigorous standards we expect today until the 1800s. |
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