AP BIOLOGY

Detailed explanation-1: -This is considered as an example of adaptive radiation. The process of evolution which results in the transformation of original species to many different varieties is called adaptive radiation. This is an indication that all the finches on the Galapagos Islands descended from a common ancestor.

Detailed explanation-2: -The Galápagos finches are a classic example of adaptive radiation. Their common ancestor arrived on the islands a few million years ago. Since then, a single species has evolved into different species that are adapted to fill different lifestyles.

Detailed explanation-3: -Answer and Explanation: Darwin’s finches are an example of speciation because they developed specialized beaks dependent on the type of food they ate, adapting to their food source and environment.

Detailed explanation-4: -Darwin’s finches are a classical example of an adaptive radiation. Their common ancestor arrived on the Galapagos about two million years ago. During the time that has passed the Darwin’s finches have evolved into 15 recognized species differing in body size, beak shape, song and feeding behaviour.

Detailed explanation-5: -All of them evolved from one ancestral species, which colonized the islands only a few million years ago. This process, whereby species evolve rapidly to exploit empty ecospace, is known as adaptive radiation.