Pregnancy armpit black line to determine the gender

Having a boy or girl is very important to many families, and they want to know the answer as soon as possible. Many people say that changes in the color of the armpits during pregnancy will affect the gender of the fetus. Is this true? Today, the editor will discuss in depth with everyone the question of "Will dark armpits during pregnancy mean a daughter?"

If my armpits turn black during pregnancy, will I give birth to a daughter?

There is a saying that if your armpits turn black during pregnancy, you will give birth to a daughter. Is this saying true or false? In fact, there is no scientific evidence to support this. Generally speaking, the armpits will turn black during pregnancy, but this does not determine whether you will have a boy or a girl. The sex of the fetus is determined by the chromosomes of the somatic cells and has nothing to do with the time of ovulation. Humans have 46 sex chromosomes, of which 22 pairs are standardly present in pregnant women and are called autosomes. The other pair is sex chromosomes, which are directly related to determining gender, called chromosomes. Women's chromosomes are XX and men's are XY.

During fertilization, the haploid cells from both parents fuse, the pregnant mother only provides eggs with X chromosomes, and the pregnant father provides two types of sperm, one with X chromosomes and the other with Y chromosomes. If the egg cell fuses with an X-type male sperm, it will grow into a woman; if the egg cell fuses with a Y-type male sperm, it will grow into a man. Therefore, whether a boy or girl is born depends on the type of sperm and egg that combine, and has nothing to do with the time when the egg is released. The acid and alkaline environment of the female reproductive system is stable and is not likely to change due to ovulation. During the sperm-egg combination, the male sperm travels from the vagina through the uterus and cervix to the fallopian tubes. The acid and alkaline environment of the female reproductive system are different, and the pH value is strictly maintained within a certain range to ensure normal physiological functions.

Under normal circumstances, the woman's vagina is an acidic and alkaline environment, with a general pH value of 4.1-4.9. This acidic and alkaline environment can effectively inhibit the growth of harmful bacteria. The pH value in women's uterus is around 7.0, which is a neutral environment. When we reach the fallopian tubes, where fertilization occurs, it is a weak alkaline environment. The strong acid and alkaline environment of the reproductive system is not easily changed due to some physiological changes of the human body. The egg cell is very sensitive to pH value during sperm-egg combination, and the pH value is precisely maintained at 7.4. If the pH value changes, whether it is reduced (acidic) or increased (alkaline), it will affect the progress of fertilization.