Gray and Eastern Ratsnake Comparing

Nature Talk
5

That is fascinating. I had some comments pointing P. spiloides as between the Mississippi and the Appalachian range and P. alleghaniensis was east of the range like you had mentioned. Do you think a great deal of this may be small genetic change from a common ancestor due to slight geographic differences? After all, NE TN and Western NC can be quite cold for the Southeastern US.