Question detail
Which option gives the correct cause-and-effect relationship for Reproduction, DNA and the genome: students must explain that each gene codes for a sequence of amino acids to make a specific protein.
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. Correct cause and effect: DNA is the molecule; a gene is a functional section of that molecule. This matches DNA and the genome because students must explain that each gene codes for a sequence of amino acids to make a specific protein.
- B. Reversed cause: Treating DNA as if it always means one gene. This would blur DNA vs genes instead of testing DNA and the genome.
- C. Missing link: Calling a gene a whole chromosome. This misses the objective focus on explain that each gene codes for a sequence of amino acids to make a specific protein.
- D. Different process: It moves into a neighbouring Unit 4.6 idea rather than Reproduction / DNA and the genome.
Answer
The correct option is Correct cause and effect: DNA is the molecule; a gene is a functional section of that molecule. This matches DNA and the genome because students must explain that each gene codes for a sequence of amino acids to make a specific protein.. 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 Correct cause and effect: DNA is the molecule; a gene is a functional section of that molecule. This matches DNA and the genome because students must explain that each gene codes for a sequence of amino acids to make a specific protein.. Correct cause and effect: DNA is the molecule; a gene is a functional section of that molecule. This matches DNA and the genome because students must explain that each gene codes for a sequence of amino acids to make a specific protein. is correct because DNA is the molecule; a gene is a functional section of that molecule. The learning objective says students must explain that each gene codes for a sequence of amino acids to make a specific protein, so the answer must stay inside DNA and the genome. The alternative options are wrong because they either treating dna as if it always means one gene., calling a gene a whole chromosome., or drift away from when asking about dna, test molecular structure, base sequence, nucleotides, or genetic information storage..
Common mistake
Gene‑Protein Link Misconception
Students often think a gene is a single amino acid or that the gene’s DNA sequence directly becomes the protein sequence without any intermediate steps.
Explain that a gene is a DNA segment that is first transcribed into mRNA, which is then translated by ribosomes into a polypeptide chain; the codon sequence in the mRNA determines the order of amino acids in the final protein.
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