More than one sequence of DNA nitrogenous bases can ultimately code for the insertion of the same type of amino acid into a protein's polypeptide chain during translation. For this reason, the genetic code is a degenerate code. In science, the term "degenerate" does not imply that something is abnormal or not fully functional. With specific regard to the genetic code, the code presents a tremendous stability and regularity to genetic processes. Moreover, there are important biological advantages to systems having a certain amount of flexibility and redundancy. In the case of the genetic code, this redundancy is reflected in the fact that at the DNA level, more than one triplet code (a sequence of three base pairs) is able to instruct the insertion of the same type of amino acid into the protein's polypeptide chain during translation at the ribosome. There are also redundant codes...