Laboratory Bio-Techniques · Zoology

Which PCR component determines the region of DNA to be amplified?

  1. dNTPs
  2. Primer sequences
  3. Buffer solution
  4. DNA polymerase
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Correct answer: Primer sequences

Primer sequences are short, single-stranded DNA oligonucleotides that bind to specific complementary target regions on the template. They define the start and end points of the amplification region and provide the free 3'-OH group that DNA polymerase requires to begin synthesis.

Difficulty: Medium Question 10 of 20

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