DNA Fingerprinting and Molecular Markers · Zoology

Short Tandem Repeats (STRs) are preferred in modern DNA profiling because they:

  1. Are present only in protein-coding regions of genes
  2. Require large amounts of intact DNA
  3. Can be amplified from small DNA samples
  4. Do not vary among individuals
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Correct answer: Can be amplified from small DNA samples

STRs are short repeat units that can be easily amplified using PCR. This makes them suitable for degraded or limited DNA samples.

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