The difference between having a son and a daughter.

Pregnant women feel the same when they are pregnant with boys and girls, and there is no difference.

The sex of pregnant children is mainly determined by the genetics of male sperm chromosomes. There are two kinds of male chromosomes: one is X chromosome, the other is Y chromosome, while the other is Y chromosome.

If the X chromosome of male sperm is combined with the Y chromosome of female, it will be a boy; If the male Y chromosome is combined with the female Y chromosome, it will be a girl.

We should correctly understand and relax, regardless of the health of boys and girls is the most important.