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From CreationWiki, the encyclopedia of creation science
Speciation is the natural process by which new species are
formed. A species is generally defined as a naturally-occurring
population that is actually or potentially interbreeding and
reproductively isolated from other such groups (Ernst Mayr
1942). The formation of a new species most often occurs when
members of an established population become separated,
preventing mating or genetic flow between the groups. Organisms
that were once capable of interbreeding will gradually develop
barriers to reproduction when segregated and exposed to
differential selective pressures. This process results in two or
more genetically distinct groups of organisms that are no longer
capable of interbreeding (species). Speciation is the leading
mechanism responsible for the diversification of the created
kinds of plants and animals into many physically distinct groups
(see: biological evolution). The formation