Question

What is the function of the Zona Pellucida?

Answer 1

Zona Pellucida:

1. A thick and extracellular coat surrounding all mammalian eggs and preimplantation embryos is known an zona pellucida.
2. Zonal pellucida is made up of glycoproteins and it looks like a transparent matrix.

Functions of zona pellucida:

1. Zona pellucida protects the eggs and embryos during their development.
2. It helps to prevent polyspermy.
3. It helps in species specific fertilisation and prevents cross breeding.
4. It regulates the interaction between the sperm and the ovulated eggs.