Thursday 14 April 2011

5.6 - Speciation(allopatric)/Rate of Evolution (gradualisms, punctuated equilibrium)/Macroevolution (divergent evolution)

Speciation – allopatric
Speciation is the creation of a new species. This evolves the branching effect as shown by the theory of gradualism, theory of punctuated equilibrium and macroevolution (knowns as digvergent evolution)
Take for example the human evolution tree. Scientists believe we descend from goliath. But earlier on we could have been neanderthalls, but they diverged into other species.

Theory of Gradualism:
The theory of gradualism is a theory that believes that certain species originate from a specific ancestor, and over time they gradually (and evenly) evolved.

Theory of punctuated equilibrium: The theory of punctuated equilibrium is different from gradulism
Rate of Evolution (theory of gradualism, theory of punctuated equilibrium)
Macroevolution (divergent evolution)

This picture describes both theorys.

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