Question…
What are the 100 million or so other sperm doing as a man impregnates a women .??..or the same question can be put , applying to any male of any species , although the number of sperms differ .
Only one makes it …..the rest must take rebirth
There is a chemical signal sent to attract specific sperm .
See.
Follicular fluid from one female was better at attracting sperm from one male, while follicular fluid from another female was better at attracting sperm from a different male,” said Professor Fitzpatrick.
“This shows that interactions between human eggs and sperm depend on the specific identity of the women and men involved.”
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The idea that eggs are choosing sperm is really novel in human fertility
Professor Daniel Brison