Sympatric Speciation Scenarios
Which of the following scenarios best describes sympatric speciation?
A
Mosquitoes inhabiting the London Underground are genetically distinct from and rarely interbreed with above-ground mosquito populations.
B
Eastern gray squirrels inhabiting different geographic regions exhibit distinct coat colors.
C
The Kaibab and Abert squirrel species, which inhabit opposite sides of the Grand Canyon, evolved from a single ancestral species.
D
Resident and transient orca populations inhabit the same region of the Pacific Ocean but do not interbreed.
E
Hummingbirds living in close proximity to a food source are larger than those living farther away.