3 GCSE Biology resources Search within results Go How ratings and recommendations work Apply Filter resourcesClear all filtersLevelClear filter GCSE SubjectClear filter Biology Exam board Edexcel TopicClear filter Evolution, extinction and natural selection Selective breeding and genetic engineering Resources Advantages and disadvantages table Grid GM herbicide resistant plants GCSE, Biology Grid GM insulin GCSE, Biology Grid Selective breeding GCSE, Biology Grid Search again