Depends on what kind of animal you're interested in. In mammals its the fallopian tubes.
The head of the spermatozoa buries itself in the egg and the tail drops off. At the exact same moment the surface of the egg changes to prevent any other sperm from entering it. The coating of the head of the sperm then opens and the DNA is released and the egg becomes like a new cell with a new set of DNA in addition to its own. The egg then begins to split and split again, and again and again until a human is created.
Gametogenesis.
The egg cell is located inside the ovary of the flower. The sperm nucleus is located inside the pollentube of the flower
Sperm and Egg cells are formed by Meiosis.
There is no race in the sense of a competition, all sperm are equally affected by the chemical signals. When the sperm reaches the egg, its tail is cast off; thus disposing of male mitochondrial material; and the egg is immediately changed by the entry of the sperm so that another sperm cannot enter. Then follows the joining of the two DNA strands etc.
because the sperm cells fail to find the egg cells or the sperm isn't good to unite with the egg
Fertilization occurs when a sperm and egg unite.
When sperm coming from the testis of a male person happens to enter the tube where the egg is , one sperm may unite with the egg.
they jion the they come and the unite.
plato : answer D
somwhere in the midle.... ;)
Conception
Fertilization
Two sperm, one egg - no. Two sperm, two eggs - yes.
The union is called fertilization and only one sperm can fertilize an egg.
One because the sperm is one cell and the egg is one cell
The sperm create an enzyme that eats away at the outer layer of the membrane of the egg allowing it to enter. The sperm then enters the egg and attaches its self.