Gene is the basic unit of heredity. By copying the DNA or RNA sequence carrying genetic information to the next generation, it can guide the synthesis of protein to express its own genetic information, thus controlling the expression of individual traits.
Gene detection is a technology to detect DNA through blood, other body fluids or cells, that is, to take peripheral venous blood or other tissue cells of the subject, amplify their genetic information, and then detect DNA molecular information in the cells of the subject through special equipment.
It is a method to analyze whether gene types, gene defects and their expression functions are normal, so that people can understand their own genetic information, determine the cause or predict the risk of a certain disease.
Meaning:
1, used for the diagnosis of diseases.
For example, in the past, the diagnosis of tuberculosis infection mainly depended on sputum, feces or blood culture, and the whole examination process took more than two weeks. Using the method of gene diagnosis, not only the sensitivity is greatly improved, but also the results can be obtained in a short time.
2. Know whether you have the pathogenic genes of familial diseases and predict the risk of the disease.
It is confirmed that 10% ~ 15% of cancers are related to heredity, and many diseases such as diabetes, cardiovascular and cerebrovascular diseases are related to genetic factors. If you have cancer or polygenic diseases (such as Alzheimer's disease, hypertension, diabetes, etc.). ) can find out the genetic genes that cause diseases, and they can adjust their lifestyle in a targeted way to prevent or delay the occurrence of diseases.
Refer to the above? Baidu encyclopedia-gene detection