It's commonly thought that sperm "race" to the egg, with the winner fertilizing it. But is this really the case? When you purchase through links on our site, we may earn an affiliate commission.
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The choice of sperm is 'entirely up to the egg' — so why does the myth of 'racing sperm' persist?
It's a commonly held belief: Sperm cells are like runners in an epic race, competing against each other for access to the coveted egg at the finish line. The egg, in turn, waits patiently for the ...
A colony of human embryonic stem cells is seen on a computer monitor at the University of Wisconsin–MadisonDarren Hauck / Getty Researchers at Newcastle University in England report they have coaxed ...
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