RNA codons specify the amino acids that are used to make a protein. Mark each of the following statements concerning translation true (a) or false (b)
_____ A codon specifies a maximum of one amino acid.
_____ Some amino acids are specified by just one codon, whereas others are specified by multiple codons.
_____ The limitations of the genetic code are such that a single amino acid may be specified by no more than four codons.
_____ Because there are four RNA nucleotides and each codon is three nucleotides long, there are 64 possible codons, each of which directs the ribosome to incorporate a specific amino acid into a growing polypeptide chain.
Answer:
a A codon specifies a maximum of one amino acid.
a Some amino acids are specified by just one codon, whereas others are specified by multiple codons.
b The limitations of the genetic code are such that a single amino acid may be specified by no more than four codons.
b Because there are four RNA nucleotides and each codon is three nucleotides long, there are 64 possible codons, each of which directs the ribosome to incorporate a specific amino acid into a growing polypeptide chain.
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