BioScience Dictionary

 
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Found Adaptive radiation 2 times.

Displaying results 1 to 10.

1. Adaptive radiation
The evolution of new species or sub-species to fill unoccupied ecological niches.

2. Adaptive radiation
The development of a variety of species from a single ancestral form; occurs when a new habitat becomes available to a population . Evolutionary pattern of divergence of a great many taxa from a common ancestral species as a result of novel adaptations or a recent mass extinction . Examples: mammals during the Cenozoic Era after the extinction of dinosaurs at the close of the Mesozoic Era flowering plants during the Cretaceous Period diversified because of their reproductive advantages over gymnosperm and non-seed plants that dominated the floras of the world at that time.