eng Science and Education Publishing American Journal of Educational Research 2327-6150 2021-07-02 9 7 417 425 10.12691/education-9-7-4 EDUCATION2021974 article Jef Struyf jef.struyf@ucll.be 1 A Retired Lecturer of UCLL Campus Gasthuisberg, Chemistry Bachelors Herestraat 49, Be-3000 Leuven, Belgium This article proposes a number of codon reassignment strategies. These strategies are inferred by comparing the alternative (non-standard) genetic codes to the standard genetic code. Codon reassignments show strong and non-random connection to the standard code. The strategies interconnect all genetic codes and model a selected pathway through the heterotrophic part of life. The article also shows that the codon reassignment strategies model the evolution from the standard to the vertebrate mitochondrial code. Furthermore, it introduces a genetic code table based on third position synonyms that compares the vertebrate mitochondrial code to the standard code. http://pubs.sciepub.com/education/9/7/4/education-9-7-4.pdf alternative genetic codes biochemical strategies codon reassignments codon reassignment strategies codon reassignment tables genetic code table molecular evolution molecular genetics non-standard genetic codes table for alternative genetic codes table for non-standard genetic codes