The informational part of i-RNA contains 120 nucleotides. Determine the number of amino acids included in the protein it encodes, the number of t-RNA molecules involved in the biosynthesis of this protein, the number of triplets in the gene region encoding the primary structure of this protein (it should be borne in mind that one t-RNA delivers one amino acid to the ribosome). Explain the results obtained.
1. The amino acid is encoded by a triplet of nucleotides, therefore, the protein contains
120: 3 = 40 amino acids;
2. Since t-RNA transports one amino acid, 40 t-RNAs were required for translation.
3. i-RNA is a copy of the gene encoding this protein, therefore the gene contains 120: 3 = 40 triplets.
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