Hello everyone, I believe many netizens don’t understand DNA testing very well, including the principles and methods of DNA testing, but it doesn’t matter. Next, I will share with you about DNA testing. You can pay attention to the collection of some knowledge points on the principles and methods of DNA detection, so as not to find it next time, let’s get started!
Contents of this article
1 , When did DNA testing begin?
DNA testing began in 1982. DNA was used for identification in 1982 abroad and in 1991 in China. Since DNA is highly specific, the relationship between samples can be compared by measuring its nucleic acid sequence, providing reliable basis for criminal investigation, paternity testing, etc.
2. Principles and methods of DNA testing
Principles of DNA testing Also known as paternity testing, it refers to using the theories and techniques of medicine, anthropology and other disciplines to determine whether there is a biological blood relationship between parents and children in dispute. Because it is often related to responsibility and responsibility, it is called this.
The genetic theoretical basis of paternity testing is Mende\’s original law which was rediscovered in 1900.
According to this theory, DNA is the atomic material of human cells, and each atom has 46 chromosomes. Because male sperm cells and female egg cells each have 23 chromosomes due to meiosis, they are called haploid, and they only carry half of the genetic factors of their parents.
When the sperm and egg combine, each person inherits half of the molecular material from the biological father and biological mother.
Confirm the parent-child relationship by testing whether the DNA patterns of the children and parents match.
Using DNA for paternity testing, the elimination rate of non-paternity is 100%, and the confirmation rate of paternity is 99.9%.
Okay, the article is hereThis ends, I hope it helps everyone.
