A river changes course and splits a population of squirrels in two. Over time the two groups become separate species. What is this process called?
Answer and explanation
Correct answer: D. Allopatric speciation
- Step 1: A physical barrier isolates the populations. Step 2. They diverge until they can no longer interbreed. Answer: allopatric speciation. Why not the others: Sympatric speciation occurs within the same geographic territory through polyploidy or behavioral divergence, while artificial selection is driven by deliberate human breeding programs.
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