Outline the process of adaptive radiation.

a. ancestral species occupies new environment / survives natural disaster;
b. different members of the species are exposed to different selection pressures;
c. gives rise to new species that share common structures adapted to new environment / occupy all niches;
d. example of divergent evolution/homology;
e. accept valid example eg Galapagos finches, vertebrate pentadactyl limb;

There were poor explanations in general for adaptive radiation, although many candidates could use Darwin’s finches as an example.