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
A member of the amoebozoan genus Pelomyxa, showing pseudopodia.
Invasive species in Canada include (a) zebra mussels, Dreissena polymorpha, (b) sea lamprey, Petromy
Mutual symbiosis between clownfish of the genus Amphiprion that dwell among the tentacles of tropica
Indian elephant, from a Lombardy manuscript, circa 1400.
Elephant Bird
Hydrozoan. Hydra, a freshwater species capturing and digesting a water flea.