Eastern wolves and grey wolves evolved separately
From earth.com:
In a recently published paper in Molecular Biology and Evolution by Oxford University Press, researchers shed light on the ongoing debate surrounding the evolution of North American wolves. In particular, Eastern wolves and grey wolves.
This is a subject that has long puzzled scientists, conservationists, and taxonomists alike. The study focuses on the mysterious origins and genetic relationships of wolves and coyotes found in southeastern Canada, particularly the enigmatic eastern wolves.
