STR analysis

<p>Short tandem repeat (STR) analysis is a common <a href="/facts/Molecular_biology/YgqU35ub">molecular biology</a> method used to compare allele repeats at specific <a href="/facts/Locus_(genetics)/JcIT8wLm">loci</a> in <a href="/facts/DNA/nB89Iauz">DNA</a> between two or more samples.  A <a href="/facts/Short_tandem_repeat/SwfHbeXG">short tandem repeat</a> is a <a href="/facts/Microsatellite_(genetics)/SwfHbeXG">microsatellite</a> with repeat units that are 2 to 7 base pairs in length, with the number of repeats varying among individuals, making STRs effective for human identification purposes. This method differs from <a href="/facts/Restriction_fragment_length_polymorphism/tJutAmFv">restriction fragment length polymorphism analysis</a> (RFLP) since STR analysis does not cut the DNA with restriction enzymes. Instead, <a href="/facts/Polymerase_chain_reaction/G0jWzJy1">polymerase chain reaction</a> (PCR) is employed to discover the lengths of the short tandem repeats based on the length of the PCR product.
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STR analysis open-in-new

STR analysis