How many pairs of chromosomes does the human body have

summary

How many pairs of chromosomes there are in the human body is not a problem. After all, people who went to high school have studied biology textbooks. A long time ago, I saw a news in the newspaper about children's chromosomes. It said that if there are too many or too few chromosomes, the children will have problems. Recently, my wife and I are preparing for pregnancy. We are very worried that we will give birth to more How many pairs of chromosomes are there in the human body, and what are the functions of these chromosomes? Let me tell you something about chromosomes.

How many pairs of chromosomes does the human body have

First of all, from the book, we can see that there are 23 pairs of chromosomes in normal cells of human body, that is, there are 46 chromosomes in normal cells of human body, but for some abnormal cells or some hereditary diseases, their chromosome numbers are different.

Second: in terms of chromosome types, the chromosomes of our normal cells are divided into two categories. One is autosomal. There are 22 pairs of rich and noble chromosomes. That's 44. Another type of chromosome is sex chromosome, which is a pair, that is, a total of two.

Third: the function of the chromosome is to determine general traits, but the sex chromosome is to determine the sex of the human body. Generally, the two sex chromosomes of women are X chromosome and X chromosome, and the sex chromosome of men is x and Y chromosome. According to the combination of XY of men and women, the sex of the fetus is determined.

matters needing attention

Chromosome is the gene of the human body, that is, the genetic material of our body, and some traits are stored on the chromosome. If there are more or less chromosomes, there are problems, and chromosome diseases are not easy to treat.