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| Column $I$ | Column $II$ |
| $A$. Griffith | $i$. Lac operon |
| $B$. Jacob and Monod | $ii$. $DNA$ is the genetic material |
| $C$. Meselson and Stahl | $iii$. Transforming principle |
| $D$. Hershey and Chase | $iv$. $DNA$ replicates semiconservatively |
| Column $I$ | Column $II$ |
| $1$. Ligase | $a$. Peptide bond formation |
| $2$. Ribozyme | $b$. Hydrolysis of lactose |
| $3$. Permease | $c$. Joining of Okazaki fragments |
| $4$. $\beta$-galactosidase | $d$. Increases permeability |
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