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  4. Assertion (A) ELISA is based on the principle of antigen-antibody interaction. Reason (R) It helps in early detection of diseases or pathogens by the amplification of their nucleic acid.

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Q. Assertion (A) ELISA is based on the principle of antigen-antibody interaction.
Reason (R) It helps in early detection of diseases or pathogens by the amplification of their nucleic acid.

Biotechnology and its Applications

Solution:

Assertion is true, but Reason is false. Reason can be corrected as
PCR helps in early detection of diseases or pathogens by the amplification of their nucleic acid.
ELISA (Enzyme Linked Immuno Sorbent Assay) is based on the principle of antigen-antibody interaction. Infection by pathogen can be detected by the presence of antigens or by detecting the antibodies synthesised agaisnt the pathogen.