Q. 13.6( 7 Votes )
Does geographical isolation of individuals of a species lead to formation of a new species? Provide a suitable explanation.
Yes, geographical isolation of individuals of a species lead to formation of a new species.
It can be understood from the example of turtle of the Galapagos Islands. Turtles of different islands were geographically isolated. The individuals of one island could not meet with the individuals of other islands. Hence, exchange of genetic material could not take place between them. Over generations, genetic drift accumulated different changes in each sub-population. Natural selection also made them differently. After many years, the individuals of isolated groups would become so different that they would be incapable of reproducing with each other (if they meet again) and new species would evolve.
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