Biotechnology and its Applications · Class 12 · CBSE · Science Biology
Why can polymerase chain reaction (PCR) help in the early diagnosis of certain infectious diseases?
Practice question from Biotechnology and its Applications (Class 12 · CBSE · Science Biology), with the correct answer and a step-by-step solution.
medium · MCQ · Q-8B9B3F
Why can polymerase chain reaction (PCR) help in the early diagnosis of certain infectious diseases?
- A.It amplifies a specific nucleic acid sequence of the pathogen, even when present in very small amounts.Correct answer
- B.It directly destroys all pathogens present in the patient's blood.
- C.It stimulates antibody production before the pathogen enters the body.
- D.It converts pathogen DNA into antibodies detectable by microscopy.
Solution
PCR produces many copies of a pathogen-specific DNA sequence. Therefore, even a very low initial amount of pathogen nucleic acid can be detected, allowing early diagnosis.
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