Short tandem repeats (STRs) are highly variable sets of repeating sequences within the genome. Because the probability of any two having an identical number of repeats at different STR regions within the genome is astronomically low, they are useful for identifying samples of DNA. With so much variability in these regions of DNA, one would assume that STRs:
A) occur outside of protein-coding regions of DNA.
B) are responsible for the physical and biochemical variation among individuals.
C) are introns.
D) are not inherited the same way as other genes.
E) are always homozygous
B) are responsible for the physical and biochemical variation among individuals.
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