今日头条

A fascinating new study finds those chemical-based preferences continue even after ***. Human eggs appear to “choose” which sperm will become the lucky winner in conceiving a baby.

“Human eggs release chemicals called chemoattractants, which leave a sort of chemical breadcrumb trail that sperm use to find unfertilized eggs,” said study author John Fitzpatrick, an assistant professor in the department of zoology at Stockholm University in Sweden.

“What we didn’t know until this study is those chemical breadcrumbs act differently on sperm from different males, in effect choosing which sperm is successful,” Fitzpatrick added.

“What this is suggesting is that these fluids are giving females one extra chance — long after she’s picked her partner — to bias the number of sperm that are going to be coming towards the eggs.”

And here’s the extraordinary finding: A woman’s egg doesn’t always agree with her choice of partner.

“We expected to see some sort of partner effect, but in half of the cases the eggs were attracting more sperm from a random male,” Fitzpatrick said. “The most likely explanation for this is that these chemical signals allow females to choose males who are more genetically compatible.”

万一就一个游泳的怎么办？

不行，我也试一试表情包吧🏊🐱

抱怨的不是那个拿冠军的，两个角。抱怨的不是自己选择的，所以他有权抱怨