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What is adaptive radiation ? When an adaptive radiation be referred to as convergent evolution? Give an example ? |
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Answer» The process of evolution of different species from one species in a given geographical area starting from a point and radiating or spreading to other geographical areas or now habitats is called adaptive radiation. This is called as divergent evolution as this involves the formation of different functional forms of basically similar structures, e.g. Darwin's finches and Australian marsupials. However when more than adaptive radiation appeared to have taken place in different habitats of an isolated geographical area, the adaptive radiation can be referred to as convergent evolution. This involves the development of similar adaptive functional structures in unrelated groups of organisms e.g-. Australian marsupials and placental mammals- Placental wolf-Placental wolf and Tasmanian wolf. |
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