Question detail
Which option best identifies the exact concept boundary for Reproduction, DNA and the genome: students must explain that DNA is contained in structures called chromosomes.
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 and the genome because students must explain that DNA is contained in structures called chromosomes.
- B. Scale confusion: Calling a gene a whole chromosome. This would blur DNA vs genes instead of testing DNA and the genome.
- C. Process confusion: Explaining protein coding without naming the gene as the relevant section of DNA. This misses the objective focus on explain that DNA is contained in structures called chromosomes.
- D. Evidence confusion: It moves into a neighbouring Unit 4.6 idea rather than Reproduction / DNA and the genome.
Answer
The correct option is Definition boundary: DNA can contain many genes; a gene has a specific coding role. This matches DNA and the genome because students must explain that DNA is contained in structures called chromosomes.. It is the only option that keeps DNA vs genes separate and answers the approved learning objective in DNA and the genome.
Explanation
The correct option is Definition boundary: DNA can contain many genes; a gene has a specific coding role. This matches DNA and the genome because students must explain that DNA is contained in structures called chromosomes.. Definition boundary: DNA can contain many genes; a gene has a specific coding role. This matches DNA and the genome because students must explain that DNA is contained in structures called chromosomes. is correct because DNA can contain many genes; a gene has a specific coding role. The learning objective says students must explain that DNA is contained in structures called chromosomes, so the answer must stay inside DNA and the genome. 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
Confusing DNA with chromosomes
Students often say DNA *is* a chromosome or that chromosomes are made of DNA, mixing up the two concepts.
Explain that DNA is the genetic material that is packaged into structures called chromosomes; chromosomes are the visible, thread‑like structures in the nucleus that contain many DNA molecules.
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