<prompt> Which of these is a conservative mutator?Glutamic acid-glutamineHistidine glycineAlanine-leucineArginine-aspaic acid  <response>: Conservative mutator, there is no change in function inspite of mutation.Alanine and Leucine are interconveable.Ref: Textbook of BIOCHEMISTRY for Medical Students, DM Vasudevan, Seventh edition, page no: 215 