A-LevelBiologyThe mitotic cell cycleMay/June 2010Paper 1 Q191 Mark

The diagram shows chromosomes at metaphase of mitosis. [Figure 19.1] What are the diploid and haploid numbers for this species?

Q: What is the correct answer to this A-Level Biology question?

The correct answer is B: diploid: 8; haploid: 4.

Q: What topic does this question test?

This question tests The mitotic cell cycle in A-Level Biology (syllabus code 9700). It is worth 1 mark.

Adiploid: 4; haploid: 8

Bdiploid: 8; haploid: 4

Cdiploid: 8; haploid: 16

Ddiploid: 16; haploid: 8

✓ Correct Answer

The correct answer is B: diploid: 8; haploid: 4

📋 Examiner Report & Trap Analysis

Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...

🎯 Mark Scheme Breakdown

Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.

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About This A-Level Biology Question

Topic

This multiple-choice question tests The mitotic cell cycle in A-Level Biology (syllabus code 9700). It is worth 1 mark.

Source

This question appeared in the Cambridge A-Level Biology May/June 2010 examination, Paper 1 Variant 2.

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