What specifically does str measure? a) str length b) the number of repeating units c) distance traveled on electrophoresis gel d) the difference between the number of repeating units between two strs

STR or Short Tandem Repeat is a method used in biology that compares the loci of the DNA between samples. It measures the "exact number of repeating units" and it is a another way of analyzing a specific characteristic of a DNA Strand aside from restriction fragment length polymorphism analysis (RFLP).

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