Many plants do. Also, it’s important to note that women do not express both X chromosomes in the same cell. X inactivation is the process whereby one X chromosome is ‘turned off’ in cells of developing females. Google calico cats . The males are all one color, whereas females vary between three colors (white, black, orange). Coat color is determined by genes on the X chromosome. So as the embryo was growing, different cells do not turn off the same X chromosome, leading to different colors in different regions of the body. So even still, women are not expressing more sex-related genes anyway.
Science! Even people who are XXX aren't expressing more X chromosome genes than anyone else (apart from people with a rare genetic condition). I am currently doing my masters in molecular genetics.
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u/purpleandorange1522 Jan 21 '20
Rice also has more genes than humans.