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| Column $X$ | Column $Y$ |
| $(1)$ $DNA$ | $(P)$ Most abundant |
| $(2)$ $m-RNA$ | $(Q)$ Various types based on anticodons |
| $(3)$ $t-RNA$ | $(R)$ Carries information as genetic code |
| $(4)$ $r-RNA$ | $(S)$ $A$ specific part acts as a template |
| List $I$ | List $II$ |
| $A$. Frederick Griffith | $I$. Genetic code |
| $B$. Francois Jacob and Jacques Monod | $II$. Semi-conservative mode of $DNA$ replication |
| $C$. Har Gobind Khorana | $III$. Transformation |
| $D$. Meselson and Stahl | $IV$. $Lac$ operon |
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