Choose the correct statements for molecular diagnosis of di…

Biology Biotechnology and Its Application Statement Based Questions Single Correct MCQ

Published on: August 21, 2026

Choose the correct statements for molecular diagnosis of diseases.

(I) Using conventional methods of diagnosis (serum and urine analysis, etc), early detection is possible.

(II) By the time when the pathogen has produced a disease symptom, the concentration of pathogen is already very high in the body.

(III) The clone having the mutated gene will not appear on the photographic film.

(IV) ELISA is based on the principle of antigen-antibody interaction.

(II) and (IV)

(I) and (III)

(I) and (II)

(II) and (III)

Text Solution

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The correct answer is:

(I) is false: Conventional methods do not allow early detection.

(II) is true: Symptoms appear when pathogen load is already high.

(III) is false: This is not generally a correct statement for molecular diagnosis.

(IV) is true: ELISA is based on antigen–antibody interaction.

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