Our finding suggests that the half-zippered structure is more ancient in SNARE evolution than any regulators that target this structure, and may have more conserved function in membrane fusion than previously thought.
The S. symbiotica genome exhibits several of the hallmarks of genome evolution observed in more ancient symbionts, including elevated rates of evolution and reduction in genome size.
It was suggested that the grapevine genome was composed of three ancestral genomes, and it has retained more ancient imprint of the evolution.
There are many sites such as this where selection is detected similarly in all or most lineages, reflecting more ancient events in mammalian evolution.
Other palaeoanthropologists, however, interpret the unique traits of Homo floresiensis as reflecting its evolution from a more ancient human precursor like Homo habilis or even an australopithecine.
This global shift in node age estimates undermines support for a more ancient timescale of ray-finned fish evolution, instead reconciling the divergence time estimates generated by the two datasets.
In the evolution of a more ancient group of schistosomes, namely, avian schistosomes, multiple repeated changes of the definitive and intermediate hosts could also occur as well as generating of new molecular adaptations, and increasing the transposition activity of TEs may serve as markers of such events.
The HA receptor, receptor for HA-mediated motility (RHAMM) preceded CD44 in evolution, and is far more ancient in origin.
PSY3 probably originated as a duplication of PSY1 during a more ancient and specific WGD event in monocot evolution that determined its modern localization in monocot genomes.
A previous study has shown that recently acquired RMSs would be active, whereas more ancient ones would be inactivated during bacterial genome evolution (Lin et al. 2001).
