AP BIOLOGY

Detailed explanation-1: -An example of speciation is the Galápagos finch. Different species of these birds live on different islands in the Galápagos archipelago, located in the Pacific Ocean off South America. The finches are isolated from one another by the ocean.

Detailed explanation-2: -So, the correct option is ‘geographical isolation’

Detailed explanation-3: -Darwin’s finches are a group of birds that diversified on the Galapagos islands after arriving from South America. They each evolved on different islands which are separated from each other by large amounts of water. They are thus an example of allopatric speciation.

Detailed explanation-4: -The birds on different islands had many similarities, but their beaks differed in size and shape. Four of Darwin’s finch species from the Galápagos Islands. The birds came from the same finch ancestor. They evolved as they adapted to different food resources on different islands.

Detailed explanation-5: -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.