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Arindam Paul posted an Question
September 16, 2020 • 02:01 am 30 points
  • IIT JAM
  • Biotechnology (BT)

The tetrapeptide gly-ala-ala-gly is a palindrome. how many such palindromic tetrapeptides can be formed from 20 different amino acids? (a) 20 (b) 420 (c) 202 (d

The tetrapeptide Gly-Ala-Ala-Gly is a palindrome. How many such palindromic tetrapeptides can be formed from 20 different amino acids? (A) 20 (B) 420 (C) 202 (D) 220

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  • Abhijeet Gaurav best-answer

    Answer is (C). It would be 20^2. As First amino acid can take 20 type & in 2nd you can choose by 20 ways. So its 20^2.

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