AP BIOLOGY

Detailed explanation-1: -New species arise through a process called speciation. In speciation, an ancestral species splits into two or more descendant species that are genetically different from one another and can no longer interbreed. Darwin envisioned speciation as a branching event.

Detailed explanation-2: -Speciation is an evolutionary process by which a new species comes into being. A species is a group of organisms that can reproduce with one another to produce fertile offspring and is reproductively isolated from other organisms.

Detailed explanation-3: -Speciation is the evolutionary process by which populations evolve to become distinct species.

Detailed explanation-4: -Solution : The classical example of adaptive radiation during formation of new species is marsupials of Australia, Darwin’s finches and giant Tortoise.

Detailed explanation-5: -Adaptive radiation is a concept in evolutionary biology where the number of species with a common ancestor increase rapidly however they are characterised by great morphological and ecological variations. So, the correct answer is ‘Divergent evolution’.