The process of producing sperm cells is called spermatogenesis. Sperm production begins before puberty through the increase in the number of precursor cells called spermatogonia. They in turn double in number through mitotic cell division and become primary and secondary spermatocytes. Then through two stages of cellular division called meiosis, the primary spermatocytes become 4 spermatids, which then further develop into spermatozoa, or sperm.
With regard to the cellular divisions involved, mitosis maintains the same number of chromosomes (46 in humans) in the nucleus of the resulting twin daughter cells after division, whereas in meiosis, the four resulting daughter cells have only 23 chromosomes each.
No, as per the autopsy report he was still actively producing sperm at the time of his death.
The colours of snail shells have nothing to do with their sex because snails are hermaphrodites, being both male and female and producing sperm and eggs at the same time. To fertilize their eggs most snails need to exchange sperm with another snail.
UH, YEA!! If you get a period you are producing eggs.
"Night Falls" are better known as "Nocturnal Emissions" or "Wet Dreams". The occur most often in boys, starting in puberty after they start producing sperm. Thus, there is no specific age as this occurs differently for each boy. Depending on how quickly the boy is developing, he can start producing sperm as early as 9 or 10 years old, or it may be delayed until age 15 or sixteen. With such a wide variation in normal development, it is difficult to say exactly when this will occur for you. Nocturnal emissions are usually associated with erotic, sexy dreams, and are the body's way of ridding itself of excess sperm or semen. When a boy grows into an adult, and becomes sexually active, then nocturnal emissions become far less frequent. Boys who masturbate regularly will sometimes report a reduction in the frequency of wet dreams.
Wearing a condom in addition to using a backup method. A great combination (but not always best for 'the mood') is a condom with a spermicide. They come in many different forms. There are gels, liquids, films. Always use the pill or a spermicide in conjunction with condoms.
actively producing sperm what does that mean exactly
No it does not.
You don't want to know. ( He,he!) Sperm cells are are produced in specialised tissue called the germinal epithelium. During puberty, hormones stimulate the sperm cells to become active. The process for producing sperm cells is called spermatogenesis.
Once you start producing sperm, you can be a dad. Males usually start producing sperm in their teenager years.
Cells replicate for many reasons, they replicate by a process of mitosis or meiosis. Mitosis producing two daughter cells and meiosis producing gamete cells (sperm or ovum(egg) )
Sexual Intercourse, when the penis enters the vagina and ejaculates.
The structures in the sperm that provide energy are known as mitochondria. They have a main function of producing motility for the human sperm.
If a stallion is exposed to an inflamatory process that kills all his sperm it takes about 55-57 days to produce new, viable sperm. A colt generally begins producing sperm at 18 to 24 months.
Sure, you eat oranges and then you leak sperm!
NO
plants
Stamen