How Is DNA test Done

In this example a DNA test is to prove whether a child really is the biological child of a husband and wife. The DNA tests are done by taking the child’s STR and analyze. The order is not the only one as examinations have to still continue analyzing the number of chromosomes.
For example, a child’s examination found that the chromosome number 3 has a sequence with a repetition AGACT of 2 times. And when the father or mother who claimed to be his biological parents also have a repetition of the same on the same chromosome number, it can be concluded that between this two people that they have family ties.
Two person can be said to have a blood relationship if they have the same 16 STR . When the order and repetition are the same, then the two people are sibling or have a close blood relation. This amount is quite small compared to the overall bonding spiral in our bodies, amounting to billions.
DNA tests can be carried out by taking little part from body. The normally used are the hair, saliva, urine, vaginal fluid, semen, blood and other body tissues. These samples will not change throughout life. The use of alcohol, tobacco or drugs will not change the structure of DNA. The results of DNA tests will be run from a new patient can be seen 2-4 weeks.

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