1. The evolutionary process whereby new species are developed: "With speciation, there is a separation of a population into genetically isolated segments that become recognized as new biological species populations."
2. The emergence of a new biological group in the course of, and as a consequence of, evolution: "Speciation is the formation of a new species. Geographic isolation can lead to genetic isolation within a few generations, as is thought to have occurred with the grizzly bear (Ursus arctos horribilis) and the polar bear (Ursus maritimus)."

"Over a period of time, the shuffling and reshuffling of the same genes result in individuals with distinct physical characteristics, vastly different from the individuals from whom they became separated; for example, the polar bear developed a unique coloration and diet as distinct from that of its grizzly cousin."

A form of organic evolution starting from a life-giving reproduction that happens due to a change in time of breeding which lessens or stops gene flow between two groups of a species: Allochronic speciation is the process of developing different biological groups as a result of members of the population that have different breeding seasons or patterns, or differing in the use of time during the day or night, rather than through geographic separation.

The differences of populations in geographical separations to the point where they are recognized as isolated species: Allopatric speciation exists when two biological populations of the same species become separated as a result of geographical changes or population dispersal and whose areas of existence are entirely disunited to such a degree that they do not occur in any one place together.

Allopatric speciations involve changes that take place with related organisms to the point where they are different enough to be considered separate species and this happens when populations of certain species are separated and adapt to their new environment or conditions (physiological, geographic, or behavioral).

The evolutionary development of plant or animal groups whose members all have similar general features and are able to produce young plants or animals together: A geographic speciation is an evolutionary change leading to the rise of new species resulting from the separations of biological populations into mutually exclusive geographic regions, thereby creating distinct gene pools.

Geographic speciation refers to the differentiation of populations of biological groups in various geographical isolations to the point where they are recognized as separate species.

The process through which new species evolve from a single ancestral species while inhabiting the same geographic region: "Sympatric speciation events are much more common in plants, as they tend to develop multiple homologous sets of chromosomes, resulting in a condition called polyploidy (having one or more extra sets of chromosomes)."

"The polyploidal offspring occupy the same environment as the parent plants; therefore, sympatry; but they are reproductively isolated while the speciation is taking place via populations with overlapping geographic ranges."