Is the fastest sperm to reach and fertilise the egg necessarily the fittest or healthiest? If not, what usually determines its success?
In: Biology
Mostly luck. It’s not necessary fittest or healthiest of all, because most sperm cells aren’t lucky by definition of luck. A group of sperm cells will move together and many of them should die out just to make path to their target easier for other cells.
But to fertilize the egg, they should be healthy enough and to complete some “checks”. That is like a basic check that their DNA is not damaged badly, under the point when cells become unable to do it’s job, but not enough to ensure that DNA don’t have any mutation – they almost certainly will have some minor mutations.
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