What is dna marker used for in dna profiling?
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The system of DNA profiling usedtoday is based on PCR and usessimple sequences or short tandem repeats (STR). ... These STR loci (locations on a chromosome) are targeted with sequence-specific primers and amplified using PCR. TheDNA fragments that result are then separated and detected using electrophoresis.
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These loci contain specific DNA markers that scientists use to identify individuals. In a routine DNA paternity test, the markers used are short tandem repeats (STRs), short pieces of DNA that occur in highly differential repeat patterns among individuals.
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