Posted: July 24th, 2017

A normal peptide has 100 amino acids. Following mutation, it has only 20; 1–10 are the same as the normal peptide; 11–20 differ from the normal peptide. Which of the following mutations occurred?

A normal peptide has 100 amino acids.
Following mutation, it has only 20; 1–10 are the
same as the normal peptide; 11–20 differ from
the normal peptide. Which of the following
mutations occurred?
(A) Nucleotide deletion in the codon for
amino acid 11 (codon 11)
(B) Nucleotide deletion in codon 20
(C) Nucleotide deletion in the intervening
sequence
(D) Nucleotide substitution in codon 11
(E) Nucleotide substitution in codon 20