Short Tandem Repeat (STR) is a DNA region with short repeat unit, which is made up of a core sequence of DNA that keeps repeating. Every person inherits one copy of an STR from each parent which may or may not have the same size of the repetition, and since this is very variable amongst humans it is used for identification analysis. Those STR loci which if multiple is used, allow high power identification with...
Short Tandem Repeat (STR) is a DNA region with short repeat unit, which is made up of a core sequence of DNA that keeps repeating. Every person inherits one copy of an STR from each parent which may or may not have the same size of the repetition, and since this is very variable amongst humans it is used for identification analysis. Those STR loci which if multiple is used, allow high power identification with a single test without high consumption of DNA, using PCR. However, it is kept in mind that STR’s can be unique, but it does not directly lead to physical properties, like hair color or skin color, or even any Genetic-diseases. STR analysis is a method used to analyze in molecular biology it is used to specifically compare loci in DNA from two or more samples. As it gives the exact amount of repetition in a certain STR which leads to the uniqueness of this approach especially when it comes to comparing two profiles which are non-relatives as relatives would have the same number of repetitions this can help but further STRs repetitions can give a distinct profile for someone.
