is a minor or major contributor to speciation is the subject of much ongoing discussion. Rapid sympatric speciation can take place through polyploidy,...

Look up specie or in specie in Wiktionary, the free dictionary. Specie may refer to: Coins or other metal money in mass circulation Bullion coins Hard...

Allopatric speciation (from Ancient Greek ἄλλος (állos) 'other' and πατρίς (patrís) 'fatherland') – also referred to as geographic speciation, vicariant...

Ecological speciation is a form of speciation arising from reproductive isolation that occurs due to an ecological factor that reduces or eliminates gene...

speciation. Charles Darwin was the first to describe the role of natural selection in speciation in his 1859 book The Origin of Species. Speciation depends...

"stepping-stone" (discrete populations), and stasipatric speciation in concordance with most of the parapatric speciation literature.: 111  Henceforth, the models are...

explains the derivation. Sympatric speciation is one of three traditional geographic modes of speciation. Allopatric speciation is the evolution of species caused...

The Specie Circular is a United States presidential executive order issued by President Andrew Jackson in 1836 pursuant to the Coinage Act of 1834. It...

process of speciation. This process of speciation influenced by natural selection is reinforcement, and can happen under any mode of speciation: 355  (e...

distinct species sharing a common range exemplifies sympatric speciation. Such speciation may be a product of reproductive isolation – which prevents hybrid...

Allochronic speciation (also known as allochronic isolation, or temporal isolation) is a form of speciation (specifically ecological speciation) arising...

Speciation has been observed multiple times under both controlled laboratory conditions and in nature. In sexually reproducing organisms, speciation results...

Hybrid speciation is a form of speciation where hybridization between two different species leads to a new species, reproductively isolated from the parent...

Peripatric speciation is a mode of speciation in which a new species is formed from an isolated peripheral population.: 105  Since peripatric speciation resembles...

part of that century. Since then, research on speciation has expanded immensely. The language of speciation has grown more complex. Debate over classification...

pressures. Divergent evolution is the process of speciation. This can happen in several ways: Allopatric speciation is when species are separated by a physical...

periods. This isolation acts as a precursor to allochronic speciation, a type of speciation which results when two populations of a species become isolated...

Humans (Homo sapiens, meaning "thinking man") or modern humans are the most common and widespread species of primate, and the last surviving species of...

Sub specie aeternitatis (Latin for "under the aspect of eternity") is, from Baruch Spinoza onwards, an honorific expression denoting what is considered...

heuristics may be employed to make the calculation faster or more robust. The speciation heuristic penalizes crossover between candidate solutions that are too...

Mutation Natural selection Adaptation Polymorphism Genetic drift Gene flow Speciation Adaptive radiation Co-operation Coevolution Coextinction Contingency Divergence...

whose geographic distributions overlap (sympatric speciation) or are separate (allopatric speciation). Pre-zygotic isolation mechanisms are the most economic...

G.; Franks, Nigel R. (July 1991). "Alternative adaptations, sympatric speciation and the evolution of parasitic, inquiline ants". Biological Journal of...

homogeneity. For this reason, gene flow has been thought to constrain speciation and prevent range expansion by combining the gene pools of the groups...

of evolution by natural selection as an explanation for adaptation and speciation. He defined natural selection as the "principle by which each slight variation...

An endangered species is a species that is very likely to become extinct in the near future, either worldwide or in a particular political jurisdiction...

Chemosensory speciation (chemosensory isolation) is the evolution of a population to become distinct species that is driven by chemical stimuli (i.e.,...

isolation. Hybridization may be important in speciation in some plant groups. However, homoploid hybrid speciation (not increasing the number of sets of chromosomes)...

Speciation of ions refers to the changing concentration of varying forms of an ion as the pH of the solution changes. The pH of a solution of a monoprotic...

claimed to be analogous to the formation of different biological species (speciation). In the extreme, pseudospeciation leads to dehumanization of other cultural...