mindblowingfactz: Women can see more shades of red than men. The gene that allows us to see the color red is on the X chromosome, of which men only have 1. Because women have 2, they can see crimson, maroon, cardinal, ruby, and scarlet, but men may

mindblowingfactz: Women can see more shades of red than men. The gene that allows us to see the color red is on the X chromosome, of which men only have 1. Because women have 2, they can see crimson, maroon, cardinal, ruby, and scarlet, but men may

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from: https://ciel62.tumblr.com/post/149783614591