A tetrapeptide " $x$ " on complete hydrolysis produced glycine (Gly), alanine (Ala), valine (Val), leucine…

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
  1. 16
  2. 32
  3. 8
  4. 24

Solution

The number of tetrapeptides (sequences) possible involving each of these amino acids (glycine, alanine, valine, leucine) ; It has three (3) peptides linkage the number of permutations in which they can be arranged
$\begin{aligned}
& =4 \times 3 \times 2 \times 1 \\
& =24
\end{aligned}$

Asked in: JEE Main 2025 (02 Apr Shift 2)

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