Question detail
Which option avoids the common misconception in this objective for Reproduction, Meiosis: students must explain how meiosis halves the number of chromosomes in gametes.
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. Misconception avoided: Chromosome number changes in meiosis; gene variants are alleles. This matches Meiosis because students must explain how meiosis halves the number of chromosomes in gametes.
- B. Common misconception: Missing that chromosomes contain many genes. This would blur Genes vs chromosomes instead of testing Meiosis.
- C. Partial misconception: Saying a chromosome codes for one protein instead of identifying a gene. This misses the objective focus on explain how meiosis halves the number of chromosomes in gametes.
- D. Terminology mix-up: It moves into a neighbouring Unit 4.6 idea rather than Reproduction / Meiosis.
Answer
The correct option is Misconception avoided: Chromosome number changes in meiosis; gene variants are alleles. This matches Meiosis because students must explain how meiosis halves the number of chromosomes in gametes.. It is the only option that keeps Genes vs chromosomes separate and answers the approved learning objective in Meiosis.
Explanation
The correct option is Misconception avoided: Chromosome number changes in meiosis; gene variants are alleles. This matches Meiosis because students must explain how meiosis halves the number of chromosomes in gametes.. Misconception avoided: Chromosome number changes in meiosis; gene variants are alleles. This matches Meiosis because students must explain how meiosis halves the number of chromosomes in gametes. is correct because Chromosome number changes in meiosis; gene variants are alleles. The learning objective says students must explain how meiosis halves the number of chromosomes in gametes, so the answer must stay inside Meiosis. The alternative options are wrong because they either missing that chromosomes contain many genes., saying a chromosome codes for one protein instead of identifying a gene., or drift away from options should make scale explicit: section of dna versus long dna molecule..
Common mistake
Misunderstanding the role of meiosis in chromosome reduction
Students often think that chromosome number is halved during the first meiotic division (Meiosis I) and then stays the same, or they believe that the reduction happens during fertilisation.
Clarify that meiosis consists of two consecutive divisions: Meiosis I separates homologous chromosomes, reducing the chromosome number by half, and Meiosis II separates sister chromatids. The resulting gametes each contain one set of chromosomes, and fertilisation simply restores the diploid number by combining two haploid sets.
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