The terms Muton, Recon and Cistron was coined by

The terms Muton, Recon and Cistron were coined by Benzer.
Muton is the smallest element of genetic material capable of undergoing a distinct mutation, usually identified as a single pair of nucleotides.
A region of a gene within which there can be no crossing-over; now known to be a single nucleotide pair is termed a Recon.
A term coined by Seymour Benzer for the smallest combinable unit within a cistron. It is a section of a DNA or RNA molecule that codes for a specific polypeptide in protein synthesis.