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| Column-$I$ | Column-$II$ |
| $i$. Avery,McCarty,and MacLeod | $a$. $DNA$ digested by DNAse inhibits transformation of $R$ cells to $S$ cells. |
| $ii$. Griffith | $b$. $DNA$ replication is semi-conservative. |
| $iii$. Hershey and Chase | $c$. Used Streptococcus pneumoniae. |
| $iv$. Meselson and Stahl | $d$. Used radioactive Sulphur and Phosphorus. |
| List-$I$ | List-$II$ |
| $(a)$ Helicase | $(i)$ $DNA$-dependent $DNA$ synthesis |
| $(b)$ Ribonuclease | $(ii)$ Digestion of $RNA$ |
| $(c)$ Reverse transcriptase | $(iii)$ Breaking hydrogen bonds between $DNA$ strands |
| $(d)$ $DNA$ polymerase | $(iv)$ $RNA$-dependent $DNA$ synthesis |
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