> Anyone have a good definition of micro vs macro?
These are highly misunderstood and misused terms. Microevolution
refers to evolution of populations within a species. Macroevolution
refers to speciation (particularly the splitting of lineages
resulting in diversification) and patterns of evolution above the
species level. Speciation has been observed and well-documented both
in the field and experimentally -- and speciation is macroevolution.
Many biologists and paleontologists would argue that there is no
clear distinction between processes acting at the population level,
and those resulting in speciation. I would agree with this, with the
additional statement that there are also additional processes that
can act in speciation.
Keith
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Received on Tue Sep 11 17:57:02 2007
This archive was generated by hypermail 2.1.8 : Tue Sep 11 2007 - 17:57:02 EDT