Does geographical isolation of individuals

Question:

Does geographical isolation of individuals of a species lead to formation of a new species ? Provide a suitable explanation.

Solution:

Yes. Geographical isolation of a population will lead to genetic drift as there will be no gene flow between it and the parent species. Inbreeding in

small population will result in fixation of certain alleles and elimination of others. There will be change in gene frequency. Mutations will produce

new alleles and hence a new gene pool. Accumulation of new alleles and hence new variations over several generations will ultimately lead to the

formation of new species.

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