Question detail
Which option correctly contrasts the named ideas for Reproduction, Advantages and disadvantages of sexual and asexual reproduction (biology only): students must explain that sexual reproduction produces variation in offspring.
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 contrast: Mitosis produces identical cells; meiosis produces genetically different gametes. This matches Advantages and disadvantages of sexual and asexual reproduction (biology only) because students must explain that sexual reproduction produces variation in offspring.
- B. Reversed contrast: Claiming mitosis produces gametes. This would blur Mitosis vs meiosis instead of testing Advantages and disadvantages of sexual and asexual reproduction (biology only).
- C. Over-broad contrast: Forgetting chromosome number is maintained in mitosis but halved in meiosis. This misses the objective focus on explain that sexual reproduction produces variation in offspring.
- D. Unrelated contrast: It moves into a neighbouring Unit 4.6 idea rather than Reproduction / Advantages and disadvantages of sexual and asexual reproduction (biology only).
Answer
The correct option is Correct contrast: Mitosis produces identical cells; meiosis produces genetically different gametes. This matches Advantages and disadvantages of sexual and asexual reproduction (biology only) because students must explain that sexual reproduction produces variation in offspring.. It is the only option that keeps Mitosis vs meiosis separate and answers the approved learning objective in Advantages and disadvantages of sexual and asexual reproduction (biology only).
Explanation
The correct option is Correct contrast: Mitosis produces identical cells; meiosis produces genetically different gametes. This matches Advantages and disadvantages of sexual and asexual reproduction (biology only) because students must explain that sexual reproduction produces variation in offspring.. Correct contrast: Mitosis produces identical cells; meiosis produces genetically different gametes. This matches Advantages and disadvantages of sexual and asexual reproduction (biology only) because students must explain that sexual reproduction produces variation in offspring. is correct because Mitosis produces identical cells; meiosis produces genetically different gametes. The learning objective says students must explain that sexual reproduction produces variation in offspring, so the answer must stay inside Advantages and disadvantages of sexual and asexual reproduction (biology only). The alternative options are wrong because they either claiming mitosis produces gametes., forgetting chromosome number is maintained in mitosis but halved in meiosis., or drift away from meiosis questions must focus on gametes, halved chromosome number, sexual reproduction, or variation..
Common mistake
Mixing up variation with mutation
Students often think that the variation produced by sexual reproduction is the same as a mutation, and therefore describe it as a change in the DNA sequence rather than a combination of existing alleles.
Explain that variation in sexual reproduction comes from the random combination of gametes (different alleles) during fertilisation, not from new changes in the DNA sequence. Use the example of a red‑green colour‑blind parent and a normal parent producing offspring with different combinations of alleles, not new mutations.
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