After a polypeptide chain has been synthesized, certain amino acids in the peptide may become modified. For each modified amino acid, identify the standard amino acid from which it is derived. Enter the abbreviated name of the standard amino acid.

standard amino acids is an amino acid used in the synthesis of peptides

Explanation: There are twenty standard amino acids which are

ALA, ARG, ASN, ASP, CYS, GLN,GLU,GLY,

the darker peppered moth species were favored due to the fact that the industrial revolution had made all the nearby trees a darker color instead of white.