Changes

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, 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 form 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]].

Microevolution, narrowly defined, is the unproven theory that [[natural selection]] can, over time, transform an [[organism]] into a more specialized form within the same species.{{fact}} Lack of evidence for [[natural selection]] has led most scientists to use the broad definition above rather than a definition based on [[natural selection]].{{fact}}