Speciation has occurred when two populations

  1. look slightly different
  2. eat different food
  3. live in different areas
  4. can no longer interbreed to produce fertile offspring
Answer

D) can no longer interbreed to produce fertile offspring

Reproductive isolation. AS & A Level Biology · Topic 17 Selection and Evolution · 17.3 Evolution

Biology MCQ · More A Level Biology: Selection and evolution MCQs · Practise