Fertilization.
The joining of an egg and a spermatazoan (sperm) is called fertilization.
The joining of an egg and a spermatazoan (sperm) is called fertilization.
The single cell formed when a sperm fertilizes an egg is called a zygote.
A fertalized egg is a zygote.
FERTILIZATION
The gametes, or "sex cells" - the sperm and ovum (egg) - become the fertilized egg (zygote) when they fuse.
The cell formed after fertilization by sperm and egg is called a zygote. A zygote is a diploid cell, meaning a cell that has two sets of chromosomes (one from egg, one from sperm).
They are called sex cells, or to be more scientific, gametes.
Nothing unless it is united with a sperm cell
The moment when sperm fertilizes an egg is called conception.
The union is called fertilization and only one sperm can fertilize an egg.
Conception or fertilisation are both terms applied to the fusing of sperm and egg.