Fertilisation

Question 1

Definition of Fertilisation

Answer 1

The fusion of nuclei of male and female gametes to form a zygote

Question 2

Full description of the process of fertilisation

Answer 2

1. The acrosome of the sperm releases enzymes which chemically break down the outer membrane of the ovum
2. Only the nucleus of one sperm enters the ovum
3. The nucleus of the sperm fuses with the nucleus of the ovum to form a zygote