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Solution


Q.

A tetrapeptide “x” on complete hydrolysis produced glycine (Gly), alanine (Ala), valine (Val), leucine (Leu) in equimolar proportion each. The number of tetrapeptides (sequences) possible involving each of these amino acids is          [2025]
1 16  
2 32  
3 8  
4 24  

Ans.

(4)

Possible combinations = 4 × 3 × 2 × 1 = 24