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Looking women sexually with pig

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Some say that depositing the sperm closer to the cervix gives Y chromosome-carrying sperm a better chance to reach the egg first. Another urges would-be moms to eat a more acidic diet if they want to have a girl. Much of the advice focuses on how to give sperm carrying either an X or Y chromosome some sort of advantage, but for the most part, none of it has been validated by science. Alireza Fazeli , a reproductive biologist at the University of Sheffield in the U. Taking advantage of the large, long oviducts of pigs, the researchers injected X chromosome-carrying sperm into one oviduct of a female pig and Y chromosome-carrying sperm into the other oviduct using laparoscopic surgery. They then sampled each oviduct 24 hours later.

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