Speciation is the evolutionary process by which new biological species arise.
Speciation
What Is a Species?
One of the best definitions is that of the evolutionary biologist Ernst Mayr: A species is an actually or potentially interbreeding population that does not interbreed with other such populations when there is ...
Speciation
When the genetic differences become so great, it can come to the stage where the two groups can no longer reproduce with one another.
5.1 Speciations Involving Polyploidy, Hybridization or Hybridization Followed by Polyploidization.
5.1.1 Plants
(See also the discussion in de Wet 1971).
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
Splitting of one into more species/transformation of one into a new species over time
Emigration/immigration moves alleles between populations
Changes allele frequency by genetic variation in meiosis ...
Speciation
The process of biological species formation, the evolution of species.
Related Terms:
Species
A group of organisms belong to the same biological species, if they are capable of interbreeding to produce fertile offspring.
Speciation, Molecular evolution, Population genetics
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See more about: Microevolution ...
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 ...
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.
Multiple speciation events create a tree structured system of relationships between species. The role of systematics is to study these relationships and thus the differences and similarities between species and groups of species.
Sympatric speciation happens when members of a population develop some genetic difference that prevents them from reproducing with the parent type.
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.
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.
vicariance -- Speciation which occurs as a result of the separation and subsequent isolation of portions of an orginal population.
quantum models of speciation Models of evolution that hold that speciation sometimes occurs rapidly as well as over long periods, as the classical theory proposed.
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.
Genetic drift
The random change of the occurance of a particular gene in a population; genetic drift is thought to be one cause of speciation when a group of organisms is separated from its parent population.
orthologous - homologous sequences in different species that result from a common ancestral gene during speciation. Orthologous genes may or may not have similar functions.
 See also: Species, Evolution, Organ, Human, Population
  
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