Without mating, there was no way for sperm, or a male sex cell
, to fertilize the eggs so they would produce offspring.
Male fights Pollen grains from the Scots pine (right) may compete to fertilize a female sex cell
Because they will later fuse with the female sex cell
, or egg, the pollen grains (like the egg) contain only half the chromosome set and are thus easier to count than other cells, which contain the double set.
When this cell fuses with another sex cell
during fertilization, any of several things may happen.
Normally, to create a human embryo, an egg must be fertilized (fused) with a sperm, or male sex cell
But other scientists like Wildt favor methods such as artificial insemination--in which sperm, a male sex cell
, is used to impregnate a female without sexual contact--recently used to successfully breed endangered ferrets.
Like most animals, Cham Leck got its start when a female sex cell
, or egg, joined with a sperm, or male sex cell
These include a biological product designed to stimulate animal immune systems, several proprietary drug delivery technologies, livestock sex cell
separation technology and food testing technologies.
These products include an immune stimulant, several proprietary drug delivery technologies and a new venture to enter the livestock sex cell
These products and technologies include an immune stimulant, several proprietary drug delivery technologies and a new venture to enter the livestock sex cell
Larvae result when a pink-colored egg, or female sex cell
, from a coral is fertilized (fused) by a male sex cell
, or sperm, of the same species.