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6 marksCell Division and Variation

CAPE Biology Unit 1 · 2015 · Paper 2 · Question 2(a)(ii)

Figure 3 is a diagram of a cell with four chromosomes (haploid number = 2) during the process of meiosis.

In the boxes below, make labelled sketches to illustrate the next TWO key stages of meiosis in this cell. Write the name of the stages on the lines provided below the boxes.

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Other parts of this question

  1. 2(a)Figure 3 is a diagram of a cell with four chromosomes (haploid number = 2) during the process of meiosis.[1 mark]
  2. 2(a)(i)Name the stage of meiosis illustrated in Figure 3.[1 mark]
  3. 2(a)(iii)Explain how the key stages identified in (a)(i) and (ii) contribute to genetic variation.[3 marks]
  4. 2(b)Explain how 'substitution' and 'insertion' result in genetic variation. Discuss how gene mutation causes sickle-cell anaemia.[5 marks]

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