Transition and Transversion on the Common Trinucleotide Circular Code

Abstract EN

In 1996, a trinucleotide circular code which is maximum, self-complementary, and C3, called X0, was identified statistically on a large gene population of eukaryotes and prokaryotes (Arquès and Michel (1996)).

Transition and transversions I and II are classical molecular evolution processes.

A comprehensive computer analysis of these three evolution processes in the code X0 shows some new results; in particular (i) transversion I on the 2nd position of any subset of trinucleotides of X0 generates trinucleotide circular codes which are always C3 and (ii) transversion II on the three positions of any subset of trinucleotides of X0 yields no trinucleotide circular codes.

These new results extend our theory of circular code in genes to its evolution under transition and transversion.