Is anyone destined to have only sons and no daughters? How many children do fortune tellers have, boys or girls? Is it really destiny takes a hand?

Of course, it is determined by men, and gender is determined by sex chromosomes in genetic genes. Female sex chromosomes are made up of XX, while male sex chromosomes are made up of XY. In other words, when a person's sex chromosome contains Y, he is a man. The principle of biogenetics is correct, but there should be some external factors at work. For example, after receiving male sperm, the acidity and salinity in the vagina will affect fertilization. I gave birth to a girl, and the way to think about it is to eat more foods containing vitamin C. A friend of mine wants to have a boy, and he eats more salty food. In addition, he can wash his reproductive organs with dilute soda before sexual intercourse. Ok, for your reference.