Translation guide
The biological process by which new species arise. In Japanese, this is primarily expressed with the technical term 種分化 (shubunka).
The evolutionary process by which populations evolve to become distinct species.
The standard scientific term for speciation in biology. Used in academic and technical contexts.
Speciation is an important process in evolution.
A more descriptive phrase meaning 'formation of species'. Less common than 種分化 but still used in some contexts.
Literally 'birth of a new species'. Used in more popular science or general contexts, but not the standard technical term.
種分化 is a technical term and may not be understood by all speakers. In casual conversation, you might explain the concept instead: 「新しい種ができること」(atarashii shu ga dekiru koto, 'the process of new species emerging').
地理的隔離が種分化を促進することがある。
Geographic isolation can promote speciation.
Research on the formation of species is advancing.
The birth of new species is frequently observed on this island.