Why is molecular diagnosis preferred over conventional methods ? Name any two techniques giving one use of each.

Explanation

Molecular diagnosis in preferred over conventional methods because it allows early detection of disease the two techniques of molecular diagnosis are :
(i) Polymerase Chain Reaction (PCR) : To detect HIV in suspected AIDS patients.
(ii) Enzyme Linked Immunosorbent Assay (ELISA) : To detect antigens (proteins, glycoproteins etc., ) of pathogens or antibodies synthesized against the pathogen.