Eggs 'choose' sperm

- New biology reports show eggs can bias fertilization by releasing chemoattractant signals that preferentially draw sperm offering better DNA compatibility, a phenomenon called 'cryptic female choice.' - The research links chemical gamete signaling to selection at fertilization and uses neural synapse analogies to explain how eggs evaluate genetic matches in lab experiments. - The findings have prompted discussion across life‑science outlets this week about reproductive selection mechanisms. (x.com) (x.com)