This article was originally published with the title “ The Nucleotide Sequence of a Nucleic Acid ” in Scientific American Magazine Vol. 214 No. 2 (February 1966), p. 30 doi:10.1038 ...

In order to understand how regulatory mechanisms work, it's first necessary to understand that not all nucleotide sequences in a strand of DNA code for the production of proteins. Rather ...

Mutations aren't just grouped according to where they occur — frequently, they are also categorized by the length of the nucleotide sequences ... In fact, some of the mutations discussed above ...