Explain how isolation changes gene pools over time and identify population evidence for the formation of new species.
Explain how divergent evolution may contribute to speciation.
Speciation is the formation of new species from pre-existing ones.
Usually by isolation of a population/gene pool.
Eventually gene pools are so different that interbreeding cannot occur.
Allopatric/sympatric speciation occurs.
Divergent evolution is where different populations adapt to different ecological roles / adaptive radiation / avoid competition.
Result of natural selection / competitive advantage of one population over another.
Example, e.g. Darwin's finches / mammalian pentadactyl limb / any other verifiable example of divergent evolution.