DNA fingerprinting (aka DNA profiling) is a scientific procedure used to determine identity or parentage using DNA. Variable Number Tandem Repeats (VNTR) are found in the nucleotides of a DNA strand. When there is a pattern of two or more nucleotides that is repeated, and the repeated patterns are directly adjacent to each other (CATCATCAT) this is a VNTR. These VNTR show up when used in gel electrophoresis, and this outcome can be used to compare DNA samples. If the pattern in the gel for a a blood sample matches the pattern in the gel for an adult, the blood most likely belongs to the adult.
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First answer by Kconstas. Last edit by Kconstas. Contributor trust: 23 [recommend contributor]. Question popularity: 22 [recommend question].
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