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. | 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. | + | 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. <ref>Evolutionists express their theory of "microevolutionary theory that natural selection should optimize the existing genetic variation in a population to maximize reproductive success." http://www.talkorigins.org/faqs/faq-intro-to-biology.html</ref> Lack of evidence for [[natural selection]] has led most scientists to use the broad definition above rather than a definition based on [[natural selection]].<ref>Darwin defined evolution in terms of natural selection. Today, for want of evidence of [[natural selection]], scientists define evolution as "a change in the gene pool." ''Id.''</ref> |
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Revision as of 06:32, 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 form within the same species. [1] Lack of evidence for natural selection has led most scientists to use the broad definition above rather than a definition based on natural selection.[2]
Sources:
- ↑ Evolutionists express their theory of "microevolutionary theory that natural selection should optimize the existing genetic variation in a population to maximize reproductive success." http://www.talkorigins.org/faqs/faq-intro-to-biology.html
- ↑ Darwin defined evolution in terms of natural selection. Today, for want of evidence of natural selection, scientists define evolution as "a change in the gene pool." Id.