The positive charge on Histones is due to an abundance of the following amino acids? A) Valine or Histidine B) Arginine or Lysine C) Proline or Methionine D) Alanine or Valine Related MCQs: Insulin has 51 amino acids, which are arranged in two polypeptide chains having? Codon that do not code for amino acids code for? Which of the following is NOT an amino acid? Abundance (کثرت میں ہونا) synonym?