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6.3 The development of understanding of genetics and evolution

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Question 4

One species of fish lives in two ponds with different water conditions. An overflow channel sometimes allows fish to move between the ponds and reproduce. Which change would be most likely to increase the rate at which the populations form separate species?

[1]
A

Adjusting the water so conditions become similar in the two ponds

B

Closing the overflow channel so fish can no longer move between the ponds

C

Allowing the overflow channel to remain open throughout each breeding season

D

Moving several adult fish from each pond to the other every year

Markscheme

6.3 The development of understanding of genetics and evolution Questions

  1. GCSE
  2. /Biology
  3. /6.3 The development of understanding of genetics and evolution

71 exam-style questions on AQA GCSE Biology 6.3 The development of understanding of genetics and evolution, covering 6.3.1 Theory of evolution, 6.3.2 Speciation, 6.3.3 The understanding of genetics, 6.3.4 Evidence for evolution, 6.3.5 Fossils, 6.3.6 Extinction, and 6.3.7 Resistant bacteria. Each one has a worked solution and a mark scheme showing where the marks go.

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