A-LevelBiologyInherited changeOct/Nov 2024Paper 4 Q1010 Marks
Populations of the moth Biston betularia live in Europe and in North America. The most common phenotype on both continents is a pale wing colour with light-grey shading (the typical form). A moth phenotype with dark wing colour (the melanic form) also occurs on both continents. Fig. 10.1 shows the typical form of the moth. Fig. 10.2 shows the melanic form of the moth. [Figure 10.1] [Figure 10.2]
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