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Arindam paul Asked a Question
September 15, 2020 8:31 pmpts 30 pts
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 thankyou
    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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