[Five secrets of having sex with boys and girls]
To know the sex skills of boys and girls, we must first understand the principle of human sex formation.
This is the theoretical basis of all intercourse skills.
Normal women ovulate one egg per menstrual cycle. The sex chromosomes of the eggs are the same, and they are all X chromosomes.
There are two types of sex chromosomes in the sperm: one is the sperm with X chromosome (commonly known as X chromosome or X sperm); the other is the sperm with Y chromosome (commonly called Y chromosome or Y sperm).
If the sperm entering the egg is X chromosome, the fertilized egg formed by the combination is the XX sex chromosome, which is the female fetus; if the sperm entering the egg is the Y chromosome, and the fertilized egg formed by the combination is the XY sex chromosome,A male fetus is formed.
So gender sex is completely determined by male sperm.
Among the hundreds of millions of sperm injected into the vagina at one time during sexual intercourse, the number of Y sperm is extremely superior, which is twice that of X, but in the end, the number of Y sperm and the number of X sperm are almost the same or caused.
Tips for controlling sex between boys and girls 1: Love temperature German researchers tracked birth records from 1946-1995 and compared with local temperature changes.
It was found that April to June was the month when the baby boy was born the most, and October was the month when the baby boy was born the least.
Further analysis showed that the ambient temperature of the month before the fertilized egg was combined, that is, the temperature of the environment in which the boy and girl were in the month before sexual intercourse, was an important factor affecting the baby’s gender.
High temperature environment is easy to create male baby, low temperature environment is easy to create female baby.
The reason why temperature will affect the sex of the baby, the researchers hypothesized is: high temperature will affect the X chromosome of sperm, making it difficult for female babies to be born; low temperature will affect the Y chromosome of sperm, making it difficult for male babies to be born.