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Adaptive Radiation By: Bobby Caldwell What is adaptive radiation? Well what adaptive radiation’s definition is, “evolution of ecological and phenotypic diversity within a rapidly multiplying lineage?” But all that really is diversification of a species or single ancestral type into several forms that are each adaptively specialized to a specific environmental niche. Classic examples of this are the 14 finches on the Galapagos Islands examined by Charles Darwin. It was almost obvious that they came from a common ancestor or ancestral population. They had many similarities but each had its own way of life. There are 4 features to help identify the possible situation of adaptive radiation: Common ancestry of component species Phenotype-environment correlation Trait utility Rapid speciation