Where is the baby's gender determined?

When I was young, everyone must have learned in biological classes. The baby's generosity was determined by men.

For some reasons, generally go to the hospital for delivery after pregnancy, doctors will not tell expectant parents to be gender.

Due to strong curiosity, with various "experience", the statement summarizes the statement of distinguishing boys and girls. The most common main are the following two:

Statement 1:

"The boy's belly is tip, the girl's belly is round"

Statement 2:

"Sour Girl" ...

So who is more accurate?

Zhimei had a good appetite during pregnancy, and her belly was big and round. The more she looked like a ball, many people were convinced that they were girls. As a result, they gave birth to a handsome little prince.

Obviously, looking at the sex of the fetus from the shape of the belly, there is no scientific basis.

The shape of the pregnant mother's belly is largely related to many reasons such as the fetus, fetal position, and pregnant mothers:

1. Fetal head

The weight of a baby baby is really heavier than the female baby, but the difference in the shape of the pregnant mother's belly is not obvious because of the different heads.

2. fetal position

In the uterus, if the fetus is back to the mother, the belly looks sharp; the fetus face the mother, and the belly looks round.

3. Pregnant mothers

If the pregnant mother's body is thin, and as the fetus grows grows, the belly's horizontal development space is limited, and the belly can only go forward.

On the contrary, pregnant mothers with fat body are more rounded.

Furthermore, pregnant mothers don't want to have a boy.

There is no medical basis for "sour girls". Pregnant women love to eat sourness, because the placenta after pregnancy will secrete a substance called HCG (human chorionic gonadotropin).

It can inhibit gastricase secretion, and pregnant women often have symptoms such as nausea, vomiting, and loss of appetite due to the significant reduction of gastric acid secretion.

These symptoms can be improved by eating acidic foods, so pregnant women will become sour.

In addition, the taste of pregnant women is also related to the dietary habits of regions and families. However, there is no significant difference in the gender ratio of newborns in various places.

The gender of the fetus is determined by the sex chromosome. It is no scientific basis for judging the gender of the fetus with the changes in the taste of pregnant women.

Everyone knows that the sex of the baby is determined by men.

Women's chromosomes are XX and men are XY. When the egg is combined with the X -type sperm of the male, it will develop into a girl; when the egg is combined with the Y sperm, it will develop into a boy [1].

Therefore, men carrying Y chromosomes are the key to determining the sex of the baby.

The real difference between men and women is actually doomed at the moment of the combination of eggs and sperm.

Do not trust the methods of various tires on the market, such as using the tire pills and "receiving male treasures", so as not to cause irreparable situations.

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Because the semen ejected by men contains a large amount of sperm, which contains both X -type sperm and Y sperm.

Exactly what conditions these "troops running" sperm are more likely to combine with eggs, and there are still no answers to this day.

For modern medicine, judging the sex of the baby is not difficult.

1. Ultrasonic imaging technology (B -ultrasound)

This technology is safer, it has no adverse effects on the fetus, and it is very common in the obstetrics and gynecology circles.

In terms of diagnosis of fetal gender, the accuracy of the baby boy is more than 95%, and the accuracy of the baby girl is about 85%[2].

However, this technology requires a higher degree of fetal development, with a pregnancy of more than 4 months, and the genitals are basically formed.

2. Pievular puncture

It is mainly to diagnose whether the fetus has chromosomal or neural tube defects, which are usually implemented in 16 to 20 weeks of pregnancy.

With certain risks, it must be done by a professional doctor. The medical community does not agree to do amniotic fluid puncture just to test the gender of the fetus [2].

3. Velvet

Also known as "fluff to take samples", it is usually done at 8-10 weeks of pregnancy.

The main purpose is the same as the amniotic puncture to diagnose whether the fetus's chromosomes are normal. The use of this method is mainly to diagnose some gender -related genetic diseases.

What needs to be emphasized here is that the purpose of using these methods is not to cater to people's wishes to give birth to boys and women.

Instead, this kind of medical means to detect pathogenic genes, such as hemophilia, pseudo -hypertrophy, various pathogenic genes such as malnutrition and other diseases, thereby reducing the probability of birth disease babies.

In order to prevent parents from doing abortion and induction of labor because the baby's gender does not meet their wishes. There is no special circumstances. The doctor does not allow the baby to disclose the sex of the baby to the expectant parents.

Finally, remind everyone that we can't choose the sex of the baby, and we don't have to choose it. Whether it is a boy or a girl, it is the best for the baby to be born with love.

Review expert

Feng Cuiping | Deputy Chief Physician of the Obstetrics Department of China -Japan Friendship Hospital

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