| Column $I$ | Column $II$ |
| $(a)$ $m-RNA$ | $(i)$ Found in ribosomes |
| $(b)$ $t-RNA$ | $(ii)$ Carries information from $DNA$ to the cytoplasm for protein synthesis |
| $(c)$ $r-RNA$ | $(iii)$ Contains $75$ nucleotides |
| $(d)$ $RNA$ | $(iv)$ $A$ polynucleotide chain containing ribose sugar and uracil base,existing in three types |
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| Column-$I$ | Column-$II$ |
|---|---|
| $(a)$ Lactose | $(i)$ Functional part of the gene |
| $(b)$ Release factor | $(ii)$ Inducer of $Lac$ operon |
| $(c)$ Histone | $(iii)$ Packaging of $\text{DNA}$ |
| $(d)$ Exon | $(iv)$ Termination of translation |
| List-$I$ | List-$II$ |
|---|---|
| $A$. Monocistronic gene | $I$. Coding sequence |
| $B$. Polycistronic gene | $II$. Intervening sequence |
| $C$. Exons | $III$. Mostly prokaryotes |
| $D$. Introns | $IV$. Mostly eukaryotes |
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