why do sperm producing cells divide by meiosis
There are two types of cell division: mitosis and meiosis. Most of the time when people refer to Бcell division,Б they mean mitosis, the process of making new body cells. Meiosis is the type of cell division that creates egg and sperm cells. Mitosis is a fundamental process for life. During mitosis, a cell duplicates all of its contents, including its chromosomes, and splits to form two identical daughter cells. Because this process is so critical, the steps of mitosis are carefully controlled by a number of genes.
When mitosis is not regulated correctly, health problems such as cancer can result. The other type of cell division, meiosis, ensures that humans have the same number of chromosomes in each generation. It is a two-step process that reduces the chromosome number by halfБfrom 46 to 23Бto form sperm and egg cells. When the sperm and egg cells unite at conception, each contributes 23 chromosomes so the resulting embryo will have the usual 46.
Meiosis also allows genetic variation through a process of DNA shuffling while the cells are dividing.
If you used to ejaculate, but don't anymore, then you should probably talk to your doctor about it. They will be able to examine you and run some tests to figure out why you can't ejaculate anymore and will help you fix the problem if there is anything wrong. I understand that it can be a very embarrassing thing, and you may not want to admit to your parents why you want to go to the doctor.
But you could tell your parents that you don't feel well and want to talk to the doctor. Once the doctor starts examining you and your parents leave the room, you can then tell the doctor the real reason you are there. They will be understanding and are there to help you. And remember, anything you tell the doctor is confidential, even from your parents, so don't be afraid that the doctor will tell your parents about what you told them.
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