spéciation wikipedia - EAS
- microbenotes.comFrom Simple English Wikipedia, the free encyclopedia Speciation is about how species form. It is a major part of evolutionary biology. Darwin thought most species came directly from pre-existing species. This is called anagenesis: species by changing, or 'phyletic evolution'.simple.wikipedia.org/wiki/Speciation
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Speciation - Wikipedia
Speciation is the evolutionary process by which populations evolve to become distinct species. The biologist Orator F. Cook coined the term in 1906 for cladogenesis, the splitting of lineages, as opposed to anagenesis, phyletic evolution within lineages. Charles Darwin was the first to
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Xem thêmIn addressing the origin of species, there are two key issues:
1. the evolutionary mechanisms of speciation
2. how the separateness and individuality of species is maintained...
Xem thêmAll forms of natural speciation have taken place over the course of evolution; however, debate persists as to the relative importance of each
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Xem thêmReinforcement
Reinforcement, also called the Wallace effect, is the process by which natural selection increases reproductive isolation. It may occur after two populations of the same species are separated and then come back into contact. If...
Xem thêmFew speciation genes have been found. They usually involve the reinforcement process of late stages of speciation. In 2008, a speciation gene
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Xem thêmThere is debate as to the rate at which speciation events occur over geologic time. While some evolutionary biologists claim that speciation events have remained relatively
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Xem thêm• Bateson–Dobzhansky–Muller model
• Chronospecies
• Court jester hypothesis
• Macroevolution...
Xem thêmNew species have been created by animal husbandry, but the dates and methods of the initiation of such species are not clear. Often, the domestic counterpart can still interbreed and produce fertile offspring with its wild ancestor. This is the case with domestic
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History of speciation - Wikipedia
The scientific study of speciation — how species evolve to become new species — began around the time of Charles Darwin in the middle of the 19th century. Many naturalists at the time recognized the relationship between biogeography (the way species are distributed) and the evolution of species. The 20th century saw the growth of the field of speciation, with major contributors such as Ernst Mayrresearching …
Wikipedia · Nội dung trong CC-BY-SA giấy phépSpéciation — Wikipédia
Speciation - Metapedia
Spéciation chimique — Wikipédia