Various numbers of short DNA sequences repeated at specific locations throughout the genome.
Regions of non-coding DNA called short tandem repeats (STRs) have repeats of the same nucleotide sequence. A person's DNA contains STRs at several genetic loci or locations. A nucleotide sequence's frequency of repetition in each STR can be calculated using the size of the STRs.
What purpose do STRs serve in DNA profiling? a. Because STRs differ amongst tissues within an individual, they can be utilized to identify the organ from where the DNA originated.
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