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Random copolymers were used in some of the experiments that revealed the charact

ID: 34660 • Letter: R

Question

Random copolymers were used in some of the experiments that revealed the characteristics of the genetic code. For a ribonucleotide mixture consisting of two parts A and three parts G, give the expected codons and their frequencies, and give the expected proportions of the amino acids that would be found in a polypeptide directed by the copolymer in a cell-free protein-synthesizing system.

           

            Codon       Frequency                                          Amino acid      Frequency

            _______   _________                                      _________      _________

            _______   _________                                      _________      _________

            _______   _________                                      _________      _________

            _______   _________                                      _________      _________

            _______   _________                                     

            _______   _________                                     

            _______   _________                                     

            _______   _________                                     

Explanation / Answer

Answer:

Mixture consisting of two parts A and three parts G.

so, 40% A and 60% G, and this code for 8 codons

AAA- Lysine

AAG- lysine

AGA- arginine

AGG- Arginine

GAA-glutamine

GAG- glutamine

GGA-glycine

GGG-glycine