Explain the concept of geographical isolation with suitable examples. 

Geographical isolation is a biological concept that refers to the physical separation of populations of organisms by geographic barriers such as mountains, rivers, oceans, or deserts. This isolation can result in the formation of distinct species over time, as genetic drift, mutation, and natural selection act on each separated population independently. In this essay, I will explain the concept of geographical isolation with suitable examples.

Geographical isolation can occur in different ways. For instance, when a group of organisms is separated from the rest of the population by a physical barrier, such as a mountain range, it can no longer interbreed with the rest of the population. This can lead to genetic divergence and eventually the formation of a new ________ _______ _________ ________ ______ ______ _________ __________ _________ ________ _________.
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