During fertilization, entry of the sperm into secondary oocyte stimulates all of the following events EXCEPT … (1) Completion of meiosis-II (2) Formation of vitelline membrane (3) Release of second polar body (4) Introduction of centrioles in the secondary oocyte
During fertilization, entry of the sperm into secondary oocyte stimulates all of the following events EXCEPT … (1) Completion of meiosis-II (2) Formation of vitelline membrane (3) Release of second polar body (4) Introduction of centrioles in the secondary oocyte

Correct Answer: (2) Formation of vitelline membrane

Explanation: During fertilization, entry of the sperm into secondary oocyte stimulates all of the following events except formation of vitelline membrane.