Question
Match the following and mark the correct option
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