According to the biomolecular data, we could infer that

a)
the four organisms do not have a common ancestor.

b)
humans are more closely related to chimps than any other apes.

c)
chimps are more closely related to gorillas than they are to humans.

d)
there is no evidence if any relationship between the four branches on the tree.

The images show two species of tree frogs in a particular region. the gray tree frogs are adapted to the trees of the woodlands, while the green tree frogs can survive in woodlands or grasslands. the gray frog was abundant in the woodlands. because of climatic changes, most of the trees in the region died, and the woodlands changed to grasslands. in such a case, the . the gray tree frog is closely related to the green tree frog genetically, but they have different mating calls. this suggests that speciation occurred because of .