The formation of a new species is called speciation. Natural selection over long periods of time can lead to a new species forming. The first step in speciation is geographic isolation. Is the isolation of a population is long enough, they might be no longer able to interbreed with the original population. At this point a new species has formed.
This flowchart shows how speciation may occur.

1. Copy the information from this page into your book or OneNote.
2. Comment on the discussion for this page: Explain how the original beetle species in the diagram became two separate species?