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A-LevelBiologyInherited changeMay/June 2024Paper 4 Q311 Marks

The tortoise beetle, Chelymorpha alternans, is an insect found in Panama that has several different colour patterns. [Figure 3.1] Researchers have identified a gene, L, that controls colour pattern in the pronotum and elytra. Gene L has four different alleles: LV, LT, LR and Lr. [Table 3.1] shows five different colour pattern phenotypes of tortoise beetles and their genotypes.

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About This A-Level Biology Question

This structured question appeared in the Cambridge A-Level Biology (9700) May/June 2024 examination, Paper 4 Variant 2. It tests the topic of Inherited change and is worth 11 marks.

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