Natural Selection and Macroevolution  by David N. Menton, Ph.D.
Copyright © 1997 Missouri Association for Creation, Inc. All
Rights Reserved.  Darwin's only observable evidence for
"evolution in action" was the great variation that occurs within
species of animals and plants under domestication. Darwin, who
knew nothing of genetics, assumed that there was virtually no
limit to this variation among the individuals of a species,
though any breeder could have told him otherwise. In the first
edition of his book On the Origin of Species, Darwin said that
he had no difficulty imagining a race of bears entering the
water to catch fish and then slowly developing wider mouths,
shorter legs, and longer tails, until they evolved by chance
into the great whales. Thus, Darwin extrapolated the observable
but limited variation, that occurs among the individuals of a
species, into the unobservable evolution of fundamentally new
animals.  Darwin reasoned that if pigeons and dogs can be
selectively bred by man to produce cer