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1 markCellular Respiration and ATP Synthesis

CAPE Biology Unit 2 · January 2022 · Paper 2 · Question 1(d)(iv)

A moth of brown wing colour was crossed with a moth of white wing colour and only some of the offspring had a brown wing colour.

Suggest the genotype of the parent with brown wings.

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Other parts of this question

  1. 1(a)On the grid provided on page 5, use appropriate scales and axes to draw a graph of the results obtained in Table 1. Provide an appropriate title for your graph…[5 marks]
  2. 1(b)State TWO precautions which should have been taken during this investigation.[2 marks]
  3. 1(c)(i)Define the following terms: Continuous variation; Discontinuous variation.[2 marks]
  4. 1(c)(ii)Suggest the type of variation which was investigated in this experiment.[1 mark]
  5. 1(c)(iii)Identify the type of graph that would be suitable for representing the data from the second experiment.[1 mark]
  6. 1(d)(i)Suggest ONE way in which this genetic variation may have arisen in the moth population.[1 mark]
  7. 1(d)(ii)Suggest ONE reason why genetic variation would be important to the moths.[1 mark]
  8. 1(d)(iii)With the use of a genetic diagram, explain the results of a cross between a moth with brown wings and a moth with white wings that produces all offspring with…[6 marks]
  9. 1(e)Suggest how the creation of the new type of diamond back moth differs from the formation of moths with a different wing colour.[2 marks]
  10. 1(f)(i)Name an appropriate device which can be used to capture the moth.[1 mark]
  11. 1(f)(ii)State how the moth is captured using the device named in (f) (i).[1 mark]
  12. 1(f)(iii)State ONE precaution that should be taken for the follow-up experiment in (f) (i).[1 mark]

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