“Synteny refers to how well chromosomal sequences from different species align with one another.”
Some have claimed that for humans the coalescence to one (or first coalescent) does not happen for well over a million years back in time, calling into question the idea of a single-couple human origin.
Venema seems much more interested in pursuing longstanding debates with intelligent design and with certain ID proponents.
Recently Dennis Venema joined with Scot McKnight to publish a book, Adam and the Genome, in which they claim that there never was an original pair of humans like Adam and Eve.
For the established scientific consensus on human evolution, 2017 was a genuine annus horribilis.