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Cambridge IGCSE Biology

21.3Genetic modification

Genetic modification in Cambridge IGCSE Biology: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic22 practice questions1 lesson

Learning objectives

What the syllabus expects you to be able to do.

  1. 21.3.1Describe genetic modification and outline examples: human proteins made by bacteria, and crop plants given herbicide resistance, insect-pest resistance or improved nutritional qualities.
  2. 21.3.2Supplement: outline how bacteria are genetically modified to make a human protein, using restriction enzymes, sticky ends, plasmids and DNA ligase.
  3. 21.3.3Supplement: discuss the advantages and disadvantages of genetically modifying crops such as soya, maize and rice.

Lessons

  • Genetic modification

    20 min

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Sample question

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Exam style

Genetic modification: sample question

1 mark

Which human protein, made by genetically modified bacteria, is used to treat diabetes?

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