Genes which confer antibiotic resistance on bacteria are located on
Chromosomal $DNA$
Plasmid
$RNA$
Polysome
Balbiani rings are present in
$DNA$ multiplication is called
Dominance of $RNA$ world is proved by
Clover leaf model of $tRNA$ has
If in a test tube, $mRNA$ of E. coli cells and $tRNAs$ from the body of rats are taken and sufficient number of amino acids are put, then the polypeptide synthesized will be of the nature of