When we read, we know: "Gene is a functional fragment of DNA molecules, the basic unit of genetic information, and the most basic factor that determines all biological species. The genes determine the life and death of human beings, which are the cause of health, beauty, and longevity. It is the manipulator and regulator of life. Therefore, where there is life, there is a gene, and the existence and decay of all life are determined by genes, including your appearance, height, weight, skin color, personality, etc. Genes are inseparable." So, what is genetic testing?
Genetic testing is a technique for detecting DNA by blood, other body fluids, or cells; individuality can be determined, and the characteristics of the group (ancestor source) can be determined by group comparison, and the needle in the haystack is first narrowed down and then tested.
gene
Modern medical research has shown that almost all diseases are related to genes except for injuries. Like blood is divided into different blood types, the normal genes in the human body are also divided into different genotypes, that is, genetic polymorphism. Different genotypes have different sensitivities to environmental factors, and sensitive genotypes can cause diseases under the influence of environmental factors. In addition, diseases caused directly by abnormal genes alone are called genetic diseases.
It can be said that there are three root causes of the disease:
(1) acquired mutations in the gene;
(2) the interaction between normal genes and the environment;
(3) Genetic defects.
In most diseases, the cause can be found in the gene.
Through its guidance on protein synthesis, genes determine how efficiently we absorb food, remove poisons from the body, and respond to infections.
There are more than 4,000 types of genetic disorders associated with the first type, which are genetically acquired by fathers or mothers.
The second type of disease is a common disease, such as heart disease, diabetes, multiple cancers, etc., which is the result of the interaction of multiple genes and various environmental factors.
Genes are chemical carriers of human genetic information that determine our similarities and dissimilarities to our predecessors. When the gene "work" is normal, our body can develop normally and function normally. If a gene is not normal, even a very small fragment of the gene is abnormal, it can cause dysplasia, disease, and even death.
A healthy body relies on constant renewal of the body to ensure the normal quantity and quality of the protein. These proteins work together to ensure the proper functioning of various functions of the body. Each protein is a product of a corresponding gene.
Genes can change, some changes do not cause changes in the amount or quality of the protein, and some cause. This change in genes is called a genetic mutation. Changes in the amount or quality of proteins can cause abnormalities in the body's function and cause disease.
Then genetic testing can diagnose diseases and can also be used to predict disease risk. Disease diagnosis is the use of genetic testing techniques to detect mutated genes that cause hereditary diseases. The most widely used genetic tests are the detection of neonatal genetic diseases, the diagnosis of genetic diseases and the auxiliary diagnosis of some common diseases. There are currently more than 1,000 genetic diseases that can be diagnosed by genetic testing techniques.
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