Question detail
Which option correctly contrasts the named ideas for Reproduction, Meiosis: students must explain how fertilisation restores the full number of 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. Correct contrast: Many genes are found on one chromosome. This matches Meiosis because students must explain how fertilisation restores the full number of chromosomes.
- B. Reversed contrast: Using gene and chromosome as the same scale of structure. This would blur Genes vs chromosomes instead of testing Meiosis.
- C. Over-broad contrast: Missing that chromosomes contain many genes. This misses the objective focus on explain how fertilisation restores the full number of chromosomes.
- D. Unrelated contrast: It moves into a neighbouring Unit 4.6 idea rather than Reproduction / Meiosis.
Answer
The correct option is Correct contrast: Many genes are found on one chromosome. This matches Meiosis because students must explain how fertilisation restores the full number of chromosomes.. It is the only option that keeps Genes vs chromosomes separate and answers the approved learning objective in Meiosis.
Explanation
The correct option is Correct contrast: Many genes are found on one chromosome. This matches Meiosis because students must explain how fertilisation restores the full number of chromosomes.. Correct contrast: Many genes are found on one chromosome. This matches Meiosis because students must explain how fertilisation restores the full number of chromosomes. is correct because Many genes are found on one chromosome. The learning objective says students must explain how fertilisation restores the full number of chromosomes, so the answer must stay inside Meiosis. The alternative options are wrong because they either using gene and chromosome as the same scale of structure., missing that chromosomes contain many genes., or drift away from question stems about chromosomes must test packaging, chromosome number, nucleus, or many genes on one molecule..
Common mistake
Assuming fertilisation adds chromosomes
Students often think fertilisation simply adds another set of chromosomes to the zygote, as if the gametes each contribute a full set rather than halved sets.
Explain that each gamete already contains half the chromosome number; fertilisation joins one haploid set from the sperm with one from the egg to restore the diploid number, not add a full set to an existing diploid cell.
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