20 13 is it accurate to have boys and girls in the Qing palace?

Many people want to know whether it is accurate to have boys and girls. In fact, accuracy is sometimes just a coincidence. Because human sex is determined by genes, and genes are determined by XY chromosomes in germ cells. Because half of the sperm have (22+X) chromosomes, while the other half contains Y gene. X and Y in the sex chromosome are the sex-determining chromosomes. When sperm and egg cells combine, the sex has been determined. If a male sperm containing Y chromosome is combined with an egg cell, development will give birth to a boy. Therefore, the birth of boys and girls cannot be predicted by tables.

Is there a scientific basis for the birth of boys and girls in the Qing palace?

Young couples can use the above prediction table 20 14 to predict the birth of boys and girls in their leisure time. Whether it is scientific or not has not been confirmed yet. If you want to give birth to boys and girls in advance scientifically, the feasible method is to do B-ultrasound or amniocentesis. Predicting the sex of the fetus is to prevent the occurrence of sex-linked genetic diseases, and we have children for prenatal and postnatal care. Boys and girls are the same. The key is that children are healthy and smart.