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Question
Read the following statement and justify the same in your own words with the help of a suitable example.
Geographical and reproductive isolation of organisms gradually leads to speciation.
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Solution
- Every species survives in specific geographical conditions and has particular requirements for food and habitat.
- The reproductive ability and breeding period of different species are also different.
- Because of these differences, individuals of one species cannot reproduce with individuals of another species.
- When populations are separated by distance or geographical barriers, they are called geographically isolated, and when they cannot interbreed, they are called reproductively isolated.
- Although subspecies may have the same ancestors, long-term isolation leads to genetic variation, which results in the formation of new species called speciation.
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