One-year-old boy or girl within a month

People are very interested in the problems that female friends have known for a long time when they are pregnant. China has strict requirements for identifying the sex of the fetus. People can judge the sex of the fetus from some simple methods. So, do you want to have a boy or a girl in a month?

Whether a single-year-old boy or a girl gives birth to a boy or a girl is mainly determined by the sex gene of sperm. This is not something that can be controlled in a month or two, and there is no exact law. Having boys and girls depends not on the sky, but on genes. The most important thing is male, because there are two types of sperm, X and Y. When X combines with female follicles, it will give birth to a female baby, and when Y combines with follicles, it will give birth to a male baby. Because of sexual intercourse, men produce a lot of sperm, so the combination of sperm type and egg is random and cannot be known in advance.

Every cell of human body (including germ cells) has 23 pairs of chromosomes carrying genetic material, of which 22 pairs are autosomes, which determine all genetic information except sex, and 1 pair is sex chromosome, which determines the sex of fetus. Autosomal men and women are the same, and there is no gender difference. Sex chromosomes are different. The male 1 sex chromosome consists of X chromosome and Y chromosome (the male genome becomes 22+XY), while the female 1 sex chromosome is X chromosome (the female genome becomes 22+XX). Half of the 23 pairs of chromosomes come from the father and the other half from the mother.

Probability of having boys and girls: Theoretically, the probability of having boys and girls is 1: 1. If both families have brothers and sisters, they will be male and the next generation will be female. One man and two women, the next generation is two men and one woman, very accurate.

Is the prediction table for boys and girls in the old yellow calendar accurate? According to the lunar calendar, the table of boys and girls in the old calendar represents the horizontal pregnancy month of women as 1- 12. Vertical 19-4 1 represents the age of pregnant women, and is calculated according to the imaginary age. Pregnant women can look for boys and girls born in the old almanac according to the age and month of pregnancy. For example, if they are 35 years old when they are pregnant, they will be pregnant in June of the lunar calendar. According to this table, predict that they will have girls.

Is the prediction table for boys and girls in the old yellow calendar accurate? In fact, from a scientific point of view, there is no substantive scientific basis for the male and female students' prediction table in the Old Yellow Calendar. Please remember not to believe it. If you really want to know whether it is a man or a woman, you can choose a scientific method to test it first.

The birth of boys and girls has been decided from the moment when sperm and eggs combine. It is the chromosomes carried by sperm that determine the sex of the fetus. If the X chromosome is combined with the egg, the fetus is a boy. If the Y chromosome is combined with the egg, the fetus is a girl. Theoretically, the probability of having a boy and a girl is 50% respectively.

During pregnancy, if pregnant women want to know the sex of the fetus, the accurate method of medical identification of the sex of the fetus is to observe the reproductive organs of the fetus by B-ultrasound, or to detect the chromosome of the fetus by DNA blood test and identify the sex of the fetus by using fine chromosomes. Both methods have scientific basis and high accuracy. However, the prediction table of boys and girls born according to the Gregorian calendar has no scientific basis and can only be used as self-entertainment in leisure time.

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