Cos right, i have the biggest japsi in the whole wide world.
There can be only one.
A sperm or egg alone can not develop into a new individual. Only an egg fertilized by a sperm does.
The process when an egg cell and a sperm cell COMBINE is called Fertilization
When a fertile sperm reaches near a mature unfertilized egg, the capability of sperm to pears through the egg cell wall and discharge its nucleus makes it possible to fertilize the egg. This union of male and female gametes to form zygote is called fertilization.
A sperm and an egg.
the egg is larger than the sperm cell
So that the sperm can break through to fertalise the egg.Because it enters to egg cell through its head only. The enzymes present at the top of its head facilitate the penetration of sperm in the egg cell.
Egg cells are the biggest: you could only fit one on the head of a pin. But I'm not sure if a sperm cell is bigger than a red blood cell or vice versa.
It fuses with the membrane of the egg cell, and the content of the sperm cell enters the egg cell.
The uniting is known as fertilisation of the egg by the sperm.
FERTILIZATION
because when the sperm and egg meet they make one hole nucleolus. the sperm and egg have half a nucleolus and they are the only cell in the world to have only half a nucleolus.