Adaptive radiation
the diversification of an ancestral group of organisms into a variety of related forms specialized to fit different environments or ways of life, each often further diversifying into more specialized types.
noun
evolution of a number of divergent species from a common ancestor, each species becoming adapted to occupy a different environment. this type of evolution occurred in the tertiary manuals and the mesozoic reptiles
adaptive radiation
(ə-dāp’tĭv)
the evolutionary diversification of a species or single ancestral lineage into various forms that are each adaptively specialized to a specific environmental niche. adaptive radiation generally proceeds most rapidly in environments where there are numerous unoccupied niches or where compet-tion for resources is minimal. see note at adaptation.
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