Difference between revisions of "Microevolution"
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| − | + | Microevolution, broadly defined, is the inevitable small-scale changes in [[allele]] frequencies in a population within the same species. Under this broad definition, this change in overall allele frequencies occurs with every birth or death of a member of the species. | |
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| + | Microevolution, narrowly defined, is the unproven theory that [[natural selection]] can, over time, transform an [[organism]] into a more specialized version within the same species. Lack of evidence for [[natural selection]] has led most scientists to use the broad definition above rather than a definition based on [[natural selection]]. | ||
Revision as of 00:47, February 12, 2007
Microevolution, broadly defined, is the inevitable small-scale changes in allele frequencies in a population within the same species. Under this broad definition, this change in overall allele frequencies occurs with every birth or death of a member of the species.
Microevolution, narrowly defined, is the unproven theory that natural selection can, over time, transform an organism into a more specialized version within the same species. Lack of evidence for natural selection has led most scientists to use the broad definition above rather than a definition based on natural selection.