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Sudden change in population that drastically reduce its size is ______?

آبادی میں اچانک تبدیلی جو اس کے سائز کو یکسر کم کرتی ہے ______ ہے؟

Answer: Bottleneck effect

Explanation
  • The Bottleneck effect occurs when a sudden event (e.g., natural disaster) drastically reduces the population size.
  • This leads to a loss of genetic diversity, as only a small number of individuals contribute to the gene pool.
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