Currently, two extant elephant species (X and Y) are placed in the genus Loxodonta, and a third species (Z) is placed in the genus Elephas. Thus, which statement should be true?
A) Species X and Y are not related to species Z.
B) Species X and Y share a greater number of homologies with each other than either does with species Z.
C) Species X and Y share a common ancestor that is still extant (in other words, not yet extinct).
D) Species X and Y are the result of artificial selection from an ancestral species Z.
E) Species X, Y, and Z share a common ancestor, but nothing more can be claimed than this
The frequency of competition according to the number of species involved.
Insect species diversity on British host trees supports the area hypothesis.
Relationships between biomass variation and species diversity.
Australopithecus sediba shares small brain size with other members of Australopithecus but also has
Evolution of Primate Species
Carnivorous plants of the genus Nepenthes grow in nitrogen-poor soil