![]() What is adaptive radiation explain with example?Ĭlosely related groups that have developed in a short period of time are the greatest examples of adaptive radiations. Adaptive radiation is the term used to describe this phenomenon. Which best explains adaptive radiation?įollowing an interaction with several new or newly established ecological niches, the ancestral line of a population diversifies into distinct forms that inhabit varied ecological niches. There are no diseases or predators on islands. Why? Island ecosystems have a greater range of species than other types of landscapes. Why are islands often home to species that exist nowhere else on earth?Įvidence of Biogeography Species that are unique to oceanic islands can be found nowhere else on the planet. Many times, a species is given the opportunity to thrive on an island because of the lack of predators there. Why isolated island chains provide opportunities for adaptive radiations?Īdaptive radiations may occur on isolated island chains for a variety of reasons. When two species have different numbers of chromosomes, they can’t reproduce, and the result is a new species with its own set of characteristics. How do island chains encourage adaptive radiation?Īdaptive radiation is facilitated by island chains in what ways? Species from one island may migrate to another island and occupy new niches there. In the Galápagos Islands, Darwin’s finches were formerly a single species. It’s called adaptive radiation when individuals of the same species separate themselves from the rest of the population by establishing distinct diets or living in various areas. Why did adaptive radiation occurs in the Galapagos? population growth) may both induce adaptive radiations. environmental changes that provide new ecological opportunities) and/or extrinsic variables (i.e.
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