short-chain RNA molecules present in the cell (in at least 20 varieties, each variety capable of combining with a specific amino acid) that attach the correct amino acid to the protein chain that is being synthesized at the ribosome of the cell (according
सेल में उपस्थित लघु-श्रृंखला वाले आरएनए अणु (कम से कम 20 किस्मों में