Question

1. what is the end result of using the technique known as polymerase chain reaction (pcr) on a dna fragment?

a. a pattern of gene fragments separated by size
b. the sequence of the entire genome of an organism
c. many copies of a dna fragment
d. a single, large protein molecule

Explanation:

• Option A: Separating gene fragments by size is done by gel electrophoresis, not PCR.
• Option B: PCR amplifies a specific DNA fragment, not sequences an entire genome (genome sequencing uses other techniques like Sanger or next - generation sequencing).
• Option C: PCR is a technique that exponentially amplifies a specific DNA fragment, resulting in many copies of that fragment.
• Option D: PCR works with DNA, not protein synthesis (protein synthesis involves transcription and translation, not PCR).

Answer:

C. Many copies of a DNA fragment