The expression of evolution begins at the molecular level. Convergent evolution occurs there as well.
Endogenous retroviruses are transposable elements (TEs) that resemble retroviruses. TEs can change their positions within a genome, and so have been called “jumping genes.”
Transposable elements can drive evolution by creating genetic and epigenetic variation. ~ Japanese cytologist Tokuji Tsuchiya & American cytologist Thomas Eulgem
The basic process of using the information encoded in DNA – transcription – employs RNA as an intermediary. Retrotransposons are TEs that employ RNA to copy themselves. Endogenous retroviruses independently evolved into retrotransposons multiple times; an example of convergent evolution at the molecular level.