Question

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 .

Answer 1

Answer:

The speciation occurred because of different mating calls.

Explanation:

• Speciation is an evolutionary process which occurs when one group of specie evolve due to climate change into distinct specie.
• According to this concept, the gray frogs will change into a distinct specie and they will not evolve to frogs, living in grasslands.
• Basically, the one feature of the specie which prevents them to merge into the same specie of other population is the cause of speciation.

Answer 2

1)population of grey tree frogs decrease

2)prezygotic isolation