DNA identification

Identification of parent-child relationship is the most currently used DNA typing for identification. Person's blood, hair, saliva, buccal cells and bones and so can be used for paternity testing, is very convenient. A person has 23 pairs (46) chromosome, the same position on the chromosome of a pair of the same gene called alleles, usually one from the father, one from the mother. If it detects a DNA alleles, one with the same mother, the other should be the same with his father, otherwise there is questionable. Use of DNA paternity test, as long as ten to dozens of sites for DNA testing, if all the same, you can determine the parent-child relationship, if there are three or more different sites, you can exclude the parent-child relationship, one or two bits the difference, you should consider the possibility of gene mutations, plus do some testing to identify sites. DNA paternity testing, negative parent-child relationship almost 100% accuracy rate, positive parent-child relationship between the accuracy rate can reach 99.99%.

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