In the human sex R chromosome, the male chromosome has X and Y, and the female chromosome only has X. When J and L are combined, if XX is combined, then the baby born is a female baby. If it is an XY combination, then the baby born is a male baby. In other words, whether the baby is male or female is decided by the prospective father, and the expectant mother has no right to speak.
What are the characteristics of prospective fathers that make it easier for them to have daughters? 1. Often in high temperature environment?
Why do prospective fathers who are often exposed to high temperatures are more likely to have daughters? This is because if prospective fathers are often exposed to high temperature, these environments are not conducive to the survival of Y Jing Z who gives birth to boys, which leads to more sons J who can give birth to female babies, which undoubtedly increases the chances of giving birth to female babies, and it seems easier to give birth to female babies.
In this way, if you are a prospective father who often works in some high temperatures, you should try to change the working environment if you want to have a boy.
2. Old?
The best reproductive age for men is 25 to 35 years old, which is the best period for J offspring. After that, the quality will gradually decline. The older you get, the worse it is for Xiao Y's living conditions, but it has less influence on X's living conditions, so the chances of having a girl will increase.
Whatever the reason, if you decide to have a baby early, whether it's a boy or a girl, you'd better do the right thing at the right age, and having a baby at the right age should be a better choice. ?
3. A stressful prospective father?
In fact, it is easier for a stressful prospective father to have a daughter, and the principle is similar to the above. But even if it has nothing to do with having boys and girls, you should learn to relieve stress, such as listening to music, running, cooking some favorite food, traveling and so on. Release all the pressure. You know, if the pressure is too great, not to mention whether you want to have a boy or a girl, even pregnancy may be a problem, so this issue should also be taken seriously.
4. A prospective father with bad habits?
Many prospective fathers like smoking and drinking. In fact, this kind of prospective father is also easy to have daughters, because frequent smoking and drinking will affect the internal environment, which is not conducive to the survival of little Y, directly weakening Y's ability and reducing the chances of having boys.
Although it is said that prospective fathers with the above four characteristics may be more likely to have daughters, it is only a matter of probability. No one can guarantee that any prospective father will have a daughter or son. There is a chance anyway. But none of the above is a healthy lifestyle, so it is not worth promoting.