Dogs (Canis lupus familiaris) and gray wolves (Canis lupus) can interbreed to produce viable, fertile offspring. These species shared a common ancestor recently (in geologic time) and have a high degree of genetic similarity, although their anatomies vary widely. Judging from this evidence, which two species concepts are most likely to place dogs and wolves together into a single species?
A) ecological and morphological
B) ecological and phylogenetic
C) morphological and phylogenetic
D) biological and morphological
E) biological and phylogenetic
Some breeds of dogs that have been obtained by selective breeding.
Two dogs copulating on a beach
Anarhichas lupus
Medial view of tracts revealed by removing gray matter from a midsagittal section
An older woman with wrinkled skin, gray hair, and darker teeth, smokes a cigarette.