because the sperm cells fail to find the egg cells or the sperm isn't good to unite with the egg
Fertilization
Sperm cells need a tail to get food or energy while the egg isnt alive yet to need emergy......?
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.
Zygote
Fertilization
One because the sperm is one cell and the egg is one cell
Sperm cells need a tail to get food or energy while the egg isnt alive yet to need emergy......?
millions of sperms cell unite with egg cell.......okie??millions of sperm cell
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.
Fertilization occurs when a sperm and egg unite.
Sperm is created in the testicles and transferred to a woman by the erect penis. "Male sex cells" are sperm cells, which unite with the woman's egg cells to cause pregnancy.
they jion the they come and the unite.
plato : answer D
Conception
somwhere in the midle.... ;)
Zygote