A-LevelBiologyGenetic technologyOct/Nov 2025Paper 4 Q89 Marks
LibertyLink® soybean is a genetically modified crop. It was first grown in 1996 and used in food products from 1998. It has been grown in 6 countries and used in food products in 21 countries. Table 8.1 summarises the modifications made to the soybean plant to produce LibertyLink® soybean. Table 8.1 name of introduced gene pat gene donor organism Streptomyces viridochromogenes gene product phosphinothricin N-acetyltransferase function of gene product stops action of glufosinate, a herbicide
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
🎯 Mark Scheme Breakdown
Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.
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