Question

Which of the following statements is incorrect for polymerase chain reaction?

• A. PCR can detect pathogen before it produce symptoms
• B. PCR requires amplification of nucleic acid
• C. It detects genetic defects
• D. PCR is useful only when pathogen concentration is very high in the body

Answer 1

Answer: (D)

$PCR$ is useful even when the pathogen concentration is extremely low in the body. It can be detected by amplification of their nuleic acid by $PCR$. Rest of the statements are correct.