AP BIOLOGY

Detailed explanation-1: -Adaptive radiation is a rapid increase in the number of species with a common ancestor, characterized by great ecological and morphological diversity. The driving force behind it is the adaptation of organisms to new ecological contexts.

Detailed explanation-2: -An adaptive radiation is a burst of evolution, creating several new species out of a single parent species. As when we discussed species richness, it is useful here to think of uninhabited “islands” of habitat, though in this case, the islands merely need to be uninhabited by the species in question.

Detailed explanation-3: -Adaptive radiation is when a species rapidly adapts to fill available niches in an ecosystem. It is a pattern of evolution that is usually seen in habitats where new ecological niches have opened up.

Detailed explanation-4: -Answer and Explanation: Adaptive radiation results in speciation by creating reproductive barriers between closely related populations. Adaptive radiation is the process in which natural selection causes closely related organisms to diverge as they specialize to occupy different ecological niches.

Detailed explanation-5: -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.