Page 25 - Research 1.0
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EVIDENCE FOR EVOLUTION - ADAPTIVE RADIATION Rev. 2.0
Adaptive Radiation is the rapid evolution of morphologically
and ecologically diverse species from a single ancestor. It
occurs when an ancestral species evolves into multiple
species to fit diverse habitats. This is what has happened
when a single species arrived on an island chain, such as the
Galapagos that had emerged as volcanic islets over millions
of years and were never connected to a mainland. Evolution
can be described as a series of ongoing natural experiments
where genetic variations are subjected to environmental
stresses. Those that survive in an environment and live long
enough to reproduce, will be the ones that pass their genes
to the population gene pool. Such isolated islands with their
varying habitats are the laboratories where those experiments
play out...
This is what occurred with the Galapagos Finches (actually
more related to Tanagers) that by the time Charles Darwin
arrived on those islands had evolved into 13 or 14 species in
4 genera. Of course Darwin did not realize that until much
later.
That isolation also resulted in 4 species of mockingbirds,
Fifteen species of Giant Tortoise (2 now extinct), a
flightless cormorant, the only tropical penguins and a marine
iguana; a total of species found nowhere else in the world.
What were missing were any amphibians (unable to withstand
exposure to salt water) or, prior to the coming of humans,
any mammal not capable of swimming or flying there.
https://www.youtube.com/watch?v=mcM23M-CCog
Creationists continually assert that they are still finches
and because the Galapagos Finches are relatively drab,
creationists try to sway uninformed members of the public
with such a claim.
Yes, and they are still birds, tetrapods, vertebrates,
chordates, animals and eukaryotes. Nothing in the Theory of