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प्रश्न
Read the following statement and justify same in your own words with the help of suitable example.
Geographical and reproductive isolation of organisms gradually leads to speciation.
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उत्तर
- Every species survives in specific geographical conditions. The requirements of food and habitat are specific for each species. Their reproductive ability and period is also different.
- Therefore, the individuals from one species cannot reproduce with individuals from other species.
- When they are separated by distance or geographical barriers, they are said to be geographically isolated.
- When they cannot reproduce with each other, they are said to be isolated reproductively.
- The ancestral species of both subspecies may be the same, but due to long-term isolation, there is genetic variation between the two. Therefore, the isolation leads to speciation.
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संबंधित प्रश्न
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Fill in the following blank with suitable word:
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Define speciation according to A.E. Emerson.
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(ii) Small chromosome
(iii) Y chromosome
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Add a note on sympatric speciation.
