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What is reproductive isolation? Give its...

What is reproductive isolation? Give its significance.

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Prevention of mating between two natural populations of the same or different species due to the presence of barriers to interbreeding is called reproductive isolation. The various barriers to interbreeding or gene exchange are called isolating mechanisms.
Significance
(i) It prevents inbreeding of natural populations present in the same geographical locality (sympatric populations).
(ii) Essential for the formation of new species.
(iii) Maintaining the distinct identity of different species.
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