An example reproductive isolation meachnism
One example of reproductive isolation mechanism is geographic isolation. This occurs when a physical barrier such as a mountain range or a body of water separates a population into two or more isolated groups. As the populations become separated, they may experience different environmental conditions, leading to genetic and phenotypic differences over time.
In this scenario, if the isolated populations were to come into contact again, they might no longer be able to successfully interbreed due to the genetic and phenotypic differences. This reproductive isolation can result in the formation of new species over time as the isolated populations become reproductively incompatible with one another.