Question detail
Which option best identifies the exact concept boundary for Reproduction, DNA structure (biology only): students must explain (HT only) how a mutation may change the protein synthesised by a gene.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Reproduction
Question
- A. Definition boundary: DNA can contain many genes; a gene has a specific coding role. This matches DNA structure (biology only) because students must explain (HT only) how a mutation may change the protein synthesised by a gene.
- B. Scale confusion: Calling a gene a whole chromosome. This would blur DNA vs genes instead of testing DNA structure (biology only).
- C. Process confusion: Explaining protein coding without naming the gene as the relevant section of DNA. This misses the objective focus on explain (HT only) how a mutation may change the protein synthesised by a gene.
- D. Evidence confusion: It moves into a neighbouring Unit 4.6 idea rather than Reproduction / DNA structure (biology only).
Answer
The correct option is Definition boundary: DNA can contain many genes; a gene has a specific coding role. This matches DNA structure (biology only) because students must explain (HT only) how a mutation may change the protein synthesised by a gene.. It is the only option that keeps DNA vs genes separate and answers the approved learning objective in DNA structure (biology only).
Explanation
The correct option is Definition boundary: DNA can contain many genes; a gene has a specific coding role. This matches DNA structure (biology only) because students must explain (HT only) how a mutation may change the protein synthesised by a gene.. Definition boundary: DNA can contain many genes; a gene has a specific coding role. This matches DNA structure (biology only) because students must explain (HT only) how a mutation may change the protein synthesised by a gene. is correct because DNA can contain many genes; a gene has a specific coding role. The learning objective says students must explain (HT only) how a mutation may change the protein synthesised by a gene, so the answer must stay inside DNA structure (biology only). The alternative options are wrong because they either calling a gene a whole chromosome., explaining protein coding without naming the gene as the relevant section of dna., or drift away from when asking about genes, test a section of dna, protein coding, alleles, or inherited characteristics..
Common mistake
Misinterpreting a point mutation
Students often think that any change in a single DNA base will always produce a completely different protein, ignoring the possibility of silent or conservative mutations.
Explain that a point mutation may be silent (no amino‑acid change), conservative (similar amino‑acid), or non‑conservative (different amino‑acid), and only the latter will alter the protein’s structure or function.
Related flashcards
Flashcard 1 of 5
Related practice questions
Question 1 of 5
Choose an answer, get feedback, then move sideways through the set.