Biology > AQA Question Papers > A-LEVEL BIOLOGYName: Practice Paper 3 (All)
A-LEVEL BIOLOGYName: Practice Paper 3
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A-LEVEL BIOLOGYName: Practice Paper 3 1 (a)What name is used for the non-coding sections of a gene? (1) Figure 1 shows a DNA base sequence. It also shows the effect of two mutations on this base s ... equence. Figure 2 shows DNA triplets that code for different amino acids (b)Complete Figure 1 to show the sequence of amino acids coded for by the original DNA base sequence (c) Some gene mutations affect the amino acid sequence. Some mutations do not. Use the information from Figure 1 and Figure 2 to explain (i) whether mutation 1 affects the amino acid sequence (ii) how mutation 2 could lead to the formation of a non-functional enzyme [Show More]
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