QuizMe

* השאלה נוספה בתאריך: 21-07-2024

		The oocyte allows entry of multiple sperm but only one will be allowed to develop
		Blocking of the zona pellucida
		Possible electrical changes - depolarization between the inner and outer regions of the oocyte to prevent sperm binding
		The oviduct does not allow sperm to pass towards the egg
		The release of toxic substances to the perivitelline space

In reptiles and birds, the mechanism to prevent polyspermy may involve: