Y chromosome and chromosomal change test in pregnancy

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Y chromosome and chromosomal change test in pregnancy

Chromosomes are the genetic units needed for living things to retain traits and continue their offspring. Humans have 46 chromosomes, 44XX in females and 44XY in males. The fact that the number of chromosomes is the same does not mean that the species can be similar to each other or that the same members can match each other. For example, blue fish do not have 46 chromosomes, humans do not have 46 chromosomes, onions do not have 16 chromosomes.

There are two different types of chromosomes, the first being autosomal, that is, to describe the structure of the body other than sex, and the second only to determine sex. That is, autosomal chromosomes have 44 gonadal (sex-determining) chromosomes, 2 of which are 44 + XX or 44 + XY.

44XY occurs only in men.

The Y gene is slightly smaller than the X gene and accounts for 2.5% of cellular DNA, while the X gene accounts for 5%.

The Y gene is only passed from father to son.

Diseases transmitted by the Y gene:

• Hairy ear
• Fish coin disease
• Fingers sticking out

 

Because these diseases are transmitted through the Y gene, they occur only in men.

 

Hairy ear: It looks like a sack that encloses with a drawstring. The downside is that it is cosmetologically irritating.

Fish coin skin disease: Some areas of the male's skin become as itchy as a fish's coin, with psoriasis similar to psoriasis, and psoriasis is more common in women.

 

Fingers sticking out: In the form of foot curtains on ducks can be in the form of sticking 2–3 of them. The development of science was assessed by the fact that before the discovery of genes, a pregnant woman was frightened of ducks or scared in her dreams.

Chromosomal disorders in the fetus, screening at 11 or 14 weeks of gestation indicates that the fetus’s cervical bone is thicker than normal, suggesting the possibility of a child with Dawn syndrome. It is now possible to make an early diagnosis of a number of diseases through an ultrasound scan conducted in these weeks. Older women or women who want to have their first child after the age of 25 have a higher risk of giving birth to a baby with Dawn syndrome who develops due to a disorder of chromosome 21. There is currently no cure for the disease.

 

At UZI, the thickness of the cervical bone is measured and then the necessary blood tests are performed. In addition, thickening of the neck can be observed in infants with heart, lung and kidney problems.

Neck thickening is most common in babies born with heart defects other than Dawn syndrome.

Therefore, echocardiography should also be performed on these fetuses.

Mothers over the age of 35, those who use drugs, toxic substances, and those in their family who have inherited diseases, mental retardation, or genius relatives should definitely pay attention to this test.

#useful information

Dr. Zarifjon Muradov