MCQ
Polymerase chain reaction technique is used for:
- ADNA amplification
- BScreening gene libraries
- CSynthesis of polymerase
- DDNA sequencing
Explanation:
Polymerase chain reaction ( PCR), a technique used to make numerous copies of a specific segment of DNA quickly and accurately.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Column $A$ Column $B$
(i) Oncogenes (1)Causes $AIDS$
(ii) Single circular $DNA$ (2)Lac-Operon concept
(iii) Splicing (3) Component of bacterial chromosome
(iv) Jacob and Monad (4) Processing of $mRNA$ molecules
(5) When activated cause cancer
$(i) (ii) (iii) (iv)$ respectively