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2 marksCell Division and Variation

CAPE Biology Unit 1 · 2009 · Paper 2 · Question 2(b)(ii)

Figure 2 shows a diagrammatic representation of three stages in Meiosis I.

State TWO features of the stage in Meiosis I which comes after Stage Z.

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Other parts of this question

  1. 2(a)(i)State the term used to describe the interaction of the two genes described above, and give an explanation of the nature of the interaction.[3 marks]
  2. 2(a)(ii)Crosses between black mice, all heterozygous for both genes, produced offspring with black, brown and white coat colour. Determine the ratio of the phenotypes…[5 marks]
  3. 2(b)(i)Identify the stages labelled as X, Y and Z.[3 marks]
  4. 2(b)(iii)Explain how the events shown in Stage X of Meiosis I contribute to heritable variation.[2 marks]

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