Column I |
Column II |
(1) Acrosome |
(a) Completion of IInd meiotic division of secondary oocyte |
(2) Penetration of sperm into ovum |
(b) Dissolution of zona pellucida |
(3) Formation of fertilization membrane |
(c) Secretion of Hyaluronidase |
(4) Acrosin / Zona lysine |
(d) Prevention of polyspermy |