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Cock pussy sperm competition

Sperm gets ejected from the penis, enters the vagina, and swims up the reproductive tract until they reach the egg to fertilize it. Barely years ago, it was considered a major scientific breakthrough when scientists came up with the idea that a fully formed, tiny human inhabited the head of each sperm — totally debunked and untrue. Fortunately, as the human body has evolved over thousands of years to maximize fertility potential, so has our scientific understanding about sperm. But many of us still believe some pretty unscientific, long-standing sperm myths. Here are twelve of the most common ones.
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12 Widely Believed Sperm Facts That Are Actually False

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Sperm Prefer Attractive Females | Live Science

Don't have an account yet? Get the most out of your experience with a personalized all-access pass to everything local on events, music, restaurants, news and more. Although their research usually involved asking college students to fill out surveys about their sex lives, Shackelford and Goetz were also interested in a theory called "sperm displacement," and investigating it called for something a little more hands-on. They wanted to know if men use their penises in a particular, thrusting way to displace potential rival sperm lurking in a woman's vagina.
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Human penis-shape and sperm competition

I don't make this stuff up, promise. I just find it and pass it along for your perusal: "Males may alter the velocity of sperm they allocate to copulations by strategically firing their left and right ejaculatory ducts, which can operate independently. Among red junglefowl, it's attractive females that do the trick, according to an article at Discovery. Similar sperm-control mechanisms have been uncovered previously. In fact, " sperm competition " is a well-supported idea that goes way back.
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Much like the United States Congress, the history of science is overwhelmingly white and male, and unsurprisingly, this has led to a pretty significant lag time in scientific understanding of things that relate to women. When it comes to animal sexual selection, we know a lot about how and why males compete for female attention , as well as about how sperm compete against each other for implantation, and about the adaptations male animals have involved to ensure their reproductive success never forget: corkscrew duck penis. But we know much less about the many ways that female animals protect their reproductive interests throughout the entire courtship, mating, and reproductive process.
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