Question

Help please

7. How does the formation of a ring species lead to speciation in the absence of allopatry?

Answer 1

7.Ring species are formed when a barrier is created that leads to the divergence of the source population into different directions that evolve over time moving around the barrier over a period of time.

As a result when the diverged species meet at the end of the circle around the barrier, the two are unable to interbreed and hence two new species develop.

This type of speciation, or species formation does not involves allopatry that leads to the formation of two species because of a barrier between the diverged individuals alone.

Here the movement over time ultimatey led to speciation. It should also be noted that in allopatry the two species can not meet due to the barrier whereas as in ring species they can meet at the point of origin from where they diverged.