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To: raynearhood
Oh, but we will argue that all changes are micro changes and eventually, though we can not observe it, a macro change happens when you compare the original species with the new species.

What the hell is a macro change? Give and example.

75 posted on 05/08/2006 9:47:45 PM PDT by js1138
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To: js1138

I can't give an example, that's the catch. It's a generic term representing the extent of change needed to evolve one species into a completely new species or a different type.

macroevolution n : evolution on a large scale extending over geologic era and resulting in the formation of new taxonomic groups

microevolution n : comparatively minor evolutionary change involving the accumulation of variations in populations usually below the species level

I can give you a bunch of theories as examples, but they aren't factual examples, as the change could not be observed.

But, here's one theory:

Archaeopteryx was small, with a wingspan of 0.5 m and weighed about 325 g. Its feathers were similar to those of flying birds, but its skeleton closely resembled that of a small carnivorous dinosaur. The brain was relatively large for an animal of that epoch.

And so we have a change from dinosaur/lizard to somewhat of a transitional bird. Though a lot of the links between the archaeoteryx and it's original ancestor (which is not known) are missing, from lizard to bird is a pretty big (macro)change.


77 posted on 05/09/2006 3:01:50 AM PDT by raynearhood ("Government does not solve problems; it subsidizes them."- Ronald Reagan)
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