A crop has no resistance to an insect pest. A suitable resistance gene is present in an unrelated bacterium but absent from the crop’s breeding population. Many identical resistant crop plants are required.
Which combination of techniques is most suitable?
Use tissue culture to introduce resistance, then selective breeding to multiply identical plants.
Use genetic engineering to introduce resistance, then random cross-pollination to produce clones.
Use genetic engineering to introduce resistance, then tissue culture to multiply the plants.
Use selective breeding to introduce the bacterial gene, then tissue culture to multiply the plants.
44 exam-style questions on Edexcel GCSE Biology 4.3 Selective breeding and genetic modification, covering 4.3.1 Selective breeding and its impact, 4.3.2 Tissue culture, 4.3.3 Genetic engineering overview, 4.3.4 Main stages of genetic engineering, 4.3.5 Advantages and disadvantages of GM organisms, 4.3.6 Agricultural solutions for a growing population, and 4.3.7 Evaluating genetic engineering and breeding. Each one has a worked solution and a mark scheme showing where the marks go.