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Speciation


Speciation by Hybridization
Intense Competition
Adaptive Radiation
House mice on the island of Madeira
Sympatric Speciation
Parapatric Speciation ...
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Speciation is the evolutionary process by which new biological species arise.
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Speciation mechanisms
Ernst Mayr proposed a speciation mechanism called allopatry. Allopatry begins when subpopulations of a species become isolated geographically (for example, by habitat fragmentation or migration).
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speciation in which the evolution of reproductive isolating mechanisms occurs within the range and habitat of the parent species. This form of speciation may be common in parasites.
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ...
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speciation that results from the geographic separation of two or more populations of species
Source: Jenkins, John B. 1990. Human Genetics, 2nd Edition. New York: Harper & Row
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Speciation through hybridization and/or polyploidy has long been considered much less important in animals than in plants [[[refs.]]]. A number of reviews suggest that this view may be mistaken.
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Sympatric speciation happens when members of a population develop some genetic difference that prevents them from reproducing with the parent type.
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Speciation
The process of biological species formation, the evolution of species.
Related Terms: Species ...
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Speciation. The process of formation of new species
Species. A population or group of populations that are in reproductive contact but are reproductively isolated from all other populations ...
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Speciation
Main article: Speciation
Speciation is the creation of two or more species from one. There are various mechanisms by which this may take place.
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speciation The process by which two or more species are formed from a single ancestral stock.
species diversity The number and relative abundance of species present in a community.
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sympatric speciation
[Gk. syn, together with + patra, fatherland, country]
A mode of speciation occurring as a result of a radical change in the genome that produces a reproductively isolated subpopulation in the midst of its parent population.
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Allopatric speciation: species formation that occurs during geographic isolation of populations. Generally believed to be the most common way in which new species arise, especially among the higher animals.
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vicariance -- Speciation which occurs as a result of the separation and subsequent isolation of portions of an orginal population.
Last updated:2006-08-27 ...
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This coordinated regulation of genes is very complex, and underlies all biological processes, including development, differentiation, evolution, speciation, and the onset of disease.
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His research has focused on speciation and several other areas of evolutionary genetics. In addition to the University of Massachusetts, Norman has also taught at the University of Chicago and the University of Texas at Arlington.
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