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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How many amino acids are coded for by the strand of mRNA shown:CGAUAC
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1
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2
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3
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4
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Explanation:
Detailed explanation-1: -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-2: -Two codons: Asn, Asp, Cys, Gln, Glu, His, Lys, Phe, Tyr, Three codons: Ile, STOP ("nonsense"). Four codons: Ala, Gly, Pro, Thr, Val.
Detailed explanation-3: -The correct answer is 3. Codon contains the triplet of bases or three nucleotides.
Detailed explanation-4: -There are 13 codon “pairs", in which the nucleotides at the first two positions are sufficient to specify two amino acids.
There is 1 question to complete.