Multiple choice

Subpopulations at the two ends of a long range develop

  1. geographical isolation

  2. spatial isolation

  3. ecological isolation

  4. mechanical isolation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

When subpopulations at the extremes of a species' range become isolated by distance, they develop spatial isolation. This separation prevents gene flow, allowing genetic divergence to occur through drift, local adaptation, or mutation. Over time, this spatial separation can lead to speciation, particularly in species with wide geographic distributions.

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