Describe one example of adaptive radiation.

Lemur and Spotted cuscus exhibit

Darwinian fitness can be estimated by

What is the most important pre-condition for adaptive radiation ?

Assertion : Darwin's finches show a variety of beaks suited for eating large seeds, flying insects and cactus seeds.

Reason : Ancestral seed-eating stock of Darwin's finches radiated out from South American mainland to different geographical areas of the Galapagos Islands, where they found competitor-free new habitats.