What Is the Key Function of a DNA Primer in the Polymerase

question 56

Multiple Choice

What is the key function of a DNA primer in the polymerase chain reaction (PCR) ?

• A)It hybridizes to the beginning of a gene,creating a site for DNA polymerase to initiate DNA synthesis of the selected gene.
• B)It aids in winding the newly produced DNA molecule with proteins to form a chromosome.
• C)It catalyzes the separation of the two strands of DNA being copied.
• D)It is the source of the four nucleotides needed in PCR.
• E)It acts as a buffer to main a constant pH in the PCR solution.

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