How do egg cells “know” not to accept more sperm once fertilized? How do they keep the rest out?

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This question is courtesy of my ten year old daughter who meant to search “cornception” on YouTube but got autocorrected to “conception.” The videos that came up were fortunately educational in nature. Thanks for reading this far!

In: Biology

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Anonymous 0 Comments

Not a biologist but I recall a line from sex egg that may or may not be true.

But multiple sperm attempt to penetrate the egg at once. When one makes it through, it releases a chemical which tells the other sperm to stop attempting penetration.

Then they wait around to be devoured by the immune system or flushed out…I think.

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