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Which option correctly contrasts the named ideas for Reproduction, Genetic inheritance: students must explain that different forms of a gene are called alleles.
- A.Correct contrast: DNA can contain many genes; a gene has a specific coding role. This matches Genetic inheritance because students must explain that different forms of a gene are called alleles.
- B.Reversed contrast: Calling a gene a whole chromosome. This would blur DNA vs genes instead of testing Genetic inheritance.
- C.Over-broad contrast: Explaining protein coding without naming the gene as the relevant section of DNA. This misses the objective focus on explain that different forms of a gene are called alleles.
- D.Unrelated contrast: It moves into a neighbouring Unit 4.6 idea rather than Reproduction / Genetic inheritance.
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