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Which option gives the correct cause-and-effect relationship for The development of understanding of genetics and evolution, Speciation (biology only): students must explain that evidence over time has improved current understanding of speciation.
- A.Correct cause and effect: DNA is the molecule; a gene is a functional section of that molecule. This matches Speciation (biology only) because students must explain that evidence over time has improved current understanding of speciation.
- B.Reversed cause: Treating DNA as if it always means one gene. This would blur DNA vs genes instead of testing Speciation (biology only).
- C.Missing link: Calling a gene a whole chromosome. This misses the objective focus on explain that evidence over time has improved current understanding of speciation.
- D.Different process: It moves into a neighbouring Unit 4.6 idea rather than The development of understanding of genetics and evolution / Speciation (biology only).
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