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In fact, both parents have a share:
From a scientific point of view, one of the chromosomes in a woman's body has a pair of sex chromosomes that are xx, while a man's is xy (x is female, y is male). You should know that man starts with a fertilized egg. Then the sex chromosome composition of the zygote determines whether the child is male or female.
Because the fertilized egg in the human sex cell is half the fertilized egg in the somatic cell. Then, the male's sex cell may be X or Y, while the female's can only be X, so the fertilized egg may be XY or XXThen if it's xy, it's a man.
If it's xx, it's a woman.
So the chance of having a boy and a girl is actually half of the chance So the previous feudal ones, what to drink medicine, especially for women, is not right.
Speaking of which, the birth of a boy or a girl is still decided by the father Choose me, I typed it word by word, we just learned biology, and there is absolutely a scientific basis. I looked, and the floors above weren't quite right.
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It is determined by both sides, to put it simply, the man is like a seeder, sowing wheat and rice at the same time, and the woman is like the land, depending on what kind of growth her physique is suitable for when she is conceived.
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Female! It's the mother of the "child"!
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It's not like someone who says they can decide.
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Related to chromosomes, the other chromosomes of men and women are the same, only the sex chromosomes are different. A man's sex chromosomes are of type X and Y, while a woman's sex chromosomes are only of type X, and if a man's X chromosome and a woman's X chromosome are combined, a girl is born; If a man's Y chromosome and a woman's X chromosome are combined, a boy is born.
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Determined by genetic factors, it will be related to the male chromosome, because the male chromosome will have a Y chromosome in the chromosome, and such a chromosome combination will affect the sex of the child.
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It is determined by the father's Y chromosome and X chromosome, if it is the X chromosome, it is a girl, if it is the Y chromosome, it is a boy.
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The man provides hundreds of millions of Y seeds and X seeds at a time, and the rest depends on the soil quality of the woman's land, which seed is suitable for survival and breeding.
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It is determined by the chromosomes of both parents, especially the father's chromosomes, which play a decisive role in determining the sex of the baby.
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Whether a boy or a girl is born at the time of pregnancy is determined by the chromosomes of the male, which is the theory of genetic inheritance. The probabilities are equal. It cannot be changed by external factors.
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This is still to be decided according to the actual financial situation of each family. How many children should be born in the family, the most important thing is to combine their own family economic conditions and other factors such as their own family realities.
First of all, if your family's economic conditions are relatively good, and you can have a family member who does not need to go to work and can take care of the children at home full-time, then in this case, you think that as long as a child, let the child grow up a little lonely, and it is not impossible to desire one or two more children, after all, you have this condition, so that your family Ding Xingyi can obviously make yourself have a sense of accomplishment and satisfaction.
But if you don't have the economic conditions in front of the stove in your own home, then I personally think that you still want a child, after all, for parents, raising children must fulfill the responsibilities and obligations of parents, which requires Qinghuai to spend a lot of material cost and time cost.
For many post-80s and post-90s generations, work itself is relatively busy, and if you want to have several more children, it is obviously unrealistic to balance career and family, so for most families, I personally think that whether it is a boy or a girl, it is enough to have one.
Who decides to have a boy or a girl? Star Awareness Project
No, there is a medical justification.
The specific formula is: the man's date of birth + the woman's date of birth + the month and day of pregnancy - 19 = the mantissa of the obtained number, the odd number is male, and the even number is female. The year, month and day in this algorithm are required to be lunar months.
Hello, in fact, although the accuracy rate of these methods of giving birth to boys and girls is quite high, I personally think that I can't fully believe it, after all, nothing is 100% accurate, even if I do B ultrasound, there may be mistakes. So try to go with the flow, don't think too much, and try to relax your mind so that it will be more beneficial to the health of the fetus.
is the third Greek letter, pronounced "gamma", lowercase , uppercase can be used in mathematics, probability, electrical engineering, physics, lowercase can be used in financial mathematics, relativity, conductivity. >>>More