THE MOLECULAR BASIS OF INHERITANCE
DNA MAKES RNA MAKES PROTEIN
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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9
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5
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3
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4
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Detailed explanation-1: -Three is the minimum number of nucleotides per codon needed to encode 20 amino acids. 4x4 = 16 amino acids. (i.e. 64 different combinations of four nucleotides taken three at a time).
Detailed explanation-2: -The three-letter nature of codons means that the four nucleotides found in mRNA-A, U, G, and C-can produce a total of 64 different combinations. Of these 64 codons, 61 represent amino acids, and the remaining three represent stop signals, which trigger the end of protein synthesis.
Detailed explanation-3: -Use the codon table to determine the sequence of amino acids that will be produced from a DNA or mRNA sequence. Use the codon table to determine which amino acid will be carried by a tRNA, given the anticodon sequence. Identify untranslated regions and include these regions in gene diagrams.