In our part of the world, reproduction or inability to conceive is always blamed on the female but it's worthy of note that it's a mutual responsibility and shouldn't be tilt to a particular gender. The semen is a white (graylike) substance which carries the spermatozoa (sperm cells). And keep them alive (some say 5 days when released to the female reproductive track) till it fertilizer an ovum. It takes one (1) sperm cell to fertility one ovum (egg) in order to conceive; notwithstanding the body produces millions of sperm cells in a day, it produces 1,500 sperm cells in a second. When one ejaculate semens, the body releases 20-300 million sperm cells in one ejaculation. Only one is needed to fertilize an ovum. These sperm cells produced daily, need days to mature to spermatozoa. Matured spermatozoa have a head, that contains the genetic part of the male. The conception of a male or female child is a function of the X and Y chromosome from the male spermatozoa and fe