Question

What is the location and nature of antifertilizin?

Options

• A lytic enzyme in the acrosome

• A polysaccharide in the corona radiata

• A glycoprotein on the zona pellucida

• A protein on the surface of sperm cytoplasm

Answer 1

Antifertilizin is a protein located on the surface of the sperm cytoplasm. It binds specifically to fertilizin of the same species only, ensuring species-specific recognition.