Fundamentholfundamenthol
NEET2023Biology
Q.

Which one of the following techniques does not serve the purpose of early diagnosis of a disease for its early treatment?

  1. A

    Recombinant DNA Technology

  2. B

    Serum and Urine analysis

  3. C

    Polymerase Chain Reaction (PCR) technique

  4. D

    Enzyme Linked Immuno-Sorbent Assay (ELISA) technique

Solution

Conventional serum and urine analysis can only detect a pathogen after the infection is well established and clinical symptoms appear. PCR amplifies pathogen nucleic acid, ELISA detects antigens or antibodies, and recombinant DNA technology underlies these molecular probes — all enable detection at very early stages of disease.

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