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there are 20 naturally occcuring amino acids. then the maximum number of tripeptidesformed is

there are 20 naturally occcuring amino acids. then the maximum number of tripeptidesformed is
 

Grade:12

1 Answers

Jayant Kishore
144 Points
8 years ago
Here three cases arise 
                                     
  1.  tripeptide from 1 amino acid ex gly-gly-gly                                               20 tripeptides
  2.  tripeptide from 2 alike and 1 distinct amino acid                                    20 . 19C2  .(3!/2!) tripeptides
  3.  tripeptide from 3 distinct amino acids                                                          20C3 . 3!    tripeptides                                                                                                                                                                                                                                                                         Total = 7373  tripeptides                         Approve the answer if correct 

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