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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a protein
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an enzyme
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an amino acid
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a nucleotide
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Detailed explanation-1: -Of these 64 codons, 61 represent amino acids, and the remaining three represent stop signals, which trigger the end of protein synthesis. Because there are only 20 different amino acids but 64 possible codons, most amino acids are indicated by more than one codon.
Detailed explanation-2: -The genetic code includes 64 possible permutations, or combinations, of three-letter nucleotide sequences that can be made from the four nucleotides. Of the 64 codons, 61 represent amino acids, and three are stop signals.
Detailed explanation-3: -Methionine and tryptophan are the only two amino acids that are coded for by just a single codon (AUG and UGG, respectively).
Detailed explanation-4: -There are 3 STOP codons in the genetic code-UAG, UAA, and UGA. These codons signal the end of the polypeptide chain during translation. These codons are also known as nonsense codons or termination codons as they do not code for an amino acid.
Detailed explanation-5: -Four codons: Ala, Gly, Pro, Thr, Val. Five codons: none. Six codons: Arg, Leu, Ser.