This is the relationship between bases and amino acid. A gene can be define as a piece of DNA which codes for a protein. The main features of genetic codes are:

• It is made up of triplets of bases and each triplet corresponds to a single cordon. Each cordon  codes for a single amino acid
• The genetic code is said to be degenerate that is a given amino acid may be coded for more than 1 cordon
• It is universal this is because there is a single  code for all living organisms that is all living organisms contain the same quantity of amino acid and the same 5 bases (AGTCU)
• It is non-overlapping that is a mRNA sequence beginning  AUG, GCA is not read
• AUG/UGA/GAU….. (Over-lapping of two bases) or AUG/GAG/GCG… (Over-lapping of one base). It is read AUG/AGC/G.C.A, hence it is non over-lapping that is no base of a given triplet contribute to part of the code of the adjacent triplet

It is consist of 64 bases triplets, some are used to start the genetic message such as AUG that code for the amino acid, methionine, some are use punctuate that is the code is punctuated. Other does not code for any amino acid e.g. UAA, UGA and UAG etc... They are therefore called the nonsense cordons. They usually end the genetic message, signating stop