Retrieved from https://en.wiktionary.org/w/index.php?title=monocline&oldid=48089207
Speciation, the formation of new and distinct species in the course of evolution. Speciation involves the splitting of a single evolutionary lineage into two or more genetically independent lineages.
Today, most biologists are more interested in understanding the process of speciation than in trying to find a strict species definition that is always applicable. Speciation is usually a gradual process, so it is not unusual to encounter populations that are only partly reproductively isolated.