STR Analysis - Forensic Uses

Forensic Uses

STR analysis is a tool in forensic analysis that evaluates specific STR regions found on nuclear DNA. The variable (polymorphic) nature of the STR regions that are analyzed for forensic testing intensifies the discrimination between one DNA profile and another. Forensic science takes advantage of the population's variability in STR lengths, enabling scientists to distinguish one DNA sample from another. For example, the likelihood that any two individuals (except identical twins) will have the same 13-loci DNA profile can be as high as 1 in 1 billion or greater.