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Which option gives the correct cause-and-effect relationship for The development of understanding of genetics and evolution, Theory of evolution (biology only): students must describe how Darwin developed the theory of evolution by natural selection using observations, experimentation, discussion, geology and fossils.
- A.Correct cause and effect: DNA is the molecule; a gene is a functional section of that molecule. This matches Theory of evolution (biology only) because students must describe how Darwin developed the theory of evolution by natural selection using observations, experimentation, discussion, geology and fossils.
- B.Reversed cause: Treating DNA as if it always means one gene. This would blur DNA vs genes instead of testing Theory of evolution (biology only).
- C.Missing link: Calling a gene a whole chromosome. This misses the objective focus on describe how Darwin developed the theory of evolution by natural selection using observations, experimentation, discussion, geology and fossils.
- D.Different process: It moves into a neighbouring Unit 4.6 idea rather than The development of understanding of genetics and evolution / Theory of evolution (biology only).
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