Dna Profiling Using Pcr Notes

The document discusses DNA profiling using PCR. It explains that DNA contains non-coding regions with repetitive sequences called microsatellites or STRs that vary in length between individuals. PCR is used to target and amplify multiple polymorphic STR sites, which allows for unique DNA profiles to be generated even when considering that individuals may share alleles at some loci. Comparing the lengths of STRs amplified from a sample to a reference can determine if two DNA sources match or not.