Question

4. The diagram below shows two species of moth with a variety of speckled colouration on its wings and body. Moth X is light-coloured and Moth Y is dark-coloured. Both populations of Moth X and Moth Y can be found in the same natural habitat. The populations of Moth X and Moth Y were tracked over a period of time. During this period of time an event occurred that changed the population size of moth X and moth Y shown in the graph below. Moth X Moth Y Population size Moth Y Moth X Time (years) a. What process is illustrated in the above scenario? (2 mark) b. What event occurred to change the population size of Moth Y and Moth X? (2 mark) c. Based on the information provided, explain in scientific terms how the colouration of the moths affected their population size and allele frequency. (6 marks)

          4. The diagram below shows two species of moth with a variety of speckled colouration on its wings and body. Moth X is light-coloured and Moth Y is dark-coloured. Both populations of Moth X and Moth Y can be found in the same natural habitat. The populations of Moth X and Moth Y were tracked over a period of time. During this period of time an event occurred that changed the population size of moth X and moth Y shown in the graph below. Moth X Moth Y Population size Moth Y Moth X Time (years) a. What process is illustrated in the above scenario? (2 mark) b. What event occurred to change the population size of Moth Y and Moth X? (2 mark) c. Based on the information provided, explain in scientific terms how the colouration of the moths affected their population size and allele frequency. (6 marks)

4. The diagram below shows two species of moth with a variety of speckled colouration on its wings and body. Moth X is light-coloured and Moth Y is dark-coloured. Both populations of Moth X and Moth Y can be found in the same natural habitat. The populations of Moth X and Moth Y were tracked over a period of time. During this period of time an event occurred that changed the population size of moth X and moth Y shown in the graph below. Moth X Moth Y Population size Moth Y Moth X Time (years) a. What process is illustrated in the above scenario? (2 mark) b. What event occurred to change the population size of Moth Y and Moth X? (2 mark) c. Based on the information provided, explain in scientific terms how the colouration of the moths affected their population size and allele frequency. (6 marks)

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