Sex of the fetus
The sex of the fetus in humans is determined by the group of sexual chromosomes in the sperm donor and the female donor of the eggs. The total number of chromosomes in the human body is male or female. Forty-six chromosomes, including sexual chromosomes only. These sex chromosomes are of two types: The female cells are free of the sexual chromosome (Y), limited to repeating the sexual chromosome (X). In other words, female chromosomes are similar, all X ), While Tak The male chromosomes are differentiated from both species.
When a sperm carrying the sexual chromosome (Y) meets an egg carrying the sexual chromosome (X), the embryo that is formed will inevitably be male; the presence of the chromosome (Y) specified for masculinity on the Although there is a corresponding sexual chromosome, while the sex of the fetus is female only in the absence of the specific chromosome (Y) of the male, such as fertilizing an X-type sperm also carries the X-type egg, Sex genetically.
How to know the type of fetus scientifically
It is possible to identify the sex of the fetus during the first trimester of pregnancy, and this is done by several mechanisms available to this matter, and vary the reliability of the detection and credibility according to the time period on the one hand, and the mechanism used on the other hand, and can be summarized mechanisms to identify the sex of the fetus as follows:
- Ultrasound detection: The use of the ultrasound device allows the fetus to determine the sex of the fetus by seeing its own genitals, and the visible image on the screen accompanying the device, and can be used on the ultrasound device; to detect the sex of the fetus starting from the fourteenth week Of pregnancy.
- Ultrasound screening is the safest, safest, and easiest way to detect fetal sex. Although the test can be performed at the beginning of the 14th week of gestation, the most appropriate period for testing the fetus extends beyond the 18th week of pregnancy The examination may have some limitations on the possibility of seeing the genitals and determining the sex in its final form, such as taking the fetus into a position in the uterus, concealing the sex of the fetus, or incorporating its legs into its pelvis, In his genital organs. Interestingly, doctors usually do not want to reveal the sex of the fetus, even in its clearest features, to take into account the possibility of change at birth.
- Examination of amniocentesis or amniocentesis: The examination of the fetal fluid or the placenta surrounding the fetus depends on the detection of the fetus’s sex. This is due to its specialization and accuracy, and its dependence on embryonic cell culture in the liquid. The amniocentesis is usually performed in the 15th and 16th weeks of pregnancy, However, this is not particularly the case. The examination of the fluid is a distinctive diagnosis, which targets undesirable changes, imbalances, and conditions that are difficult to diagnose, Ultrasound, and other primary tests, so this examination is dependent on need, without the competence to disclose the type of the fetus.
- Pull the placenta sample to detect any genetic defect in the fetus (CVS): This type of testing is aimed at detecting the chromosomal disorders and syndromes resulting from them, such as Down syndrome. For example, the determination of the sex of the fetus using this test is secondary to the primary diagnostic goal, and not a routine routine. The optimal period is limited to between the two weeks XI and XIII, although this procedure is limited in amniocentesis, but is associated with the ability to determine the type of fetus.
Knowing the type of fetus through history
The task of determining the sex of the fetus and the knowledge of its type of people and various genres throughout history; the Greeks, Indians and others to invent strange ways and methods to obtain a male or female child; customized to suit their wishes, and in accordance with their customs and beliefs, but this quest was not based on the foundations Scientific or reliable experiments suitable for measurement or scientific adoption, and the methods used by these civilizations inherited a period of time, so that some are still circulating among some cultures, as a form of medicine Alternatives to selecting and identifying the sex of the child, such as: tying a testicle or intercourse on specific days, such as selecting individual days to have a female, conjugal days for having a male, marrying a male to have a male or a slender female, and other traditional legacies.
Genetically popular methods to know the type of fetus
People have inherited many ways of detecting the sex of the fetus, and the beliefs of the validity of these mechanisms have remained largely reliable, but the testing of these methods medically proved their shortcomings and inability to maintain their proportions or expectations, including:
- Knowing the sex of the fetus from the shape of the mother’s belly.
- Determine the sex of the fetus from the shape of the mother’s hand.
- Eat sweets.
- Obesity of the father.
- The spread of pimples, and the feeling of morning fatigue.
- Mental state, mood.
- Dry hands.
- There is a difference in the size of both breasts.
- Sleep on one side of the body.