Advantages of genetic engineering vs selective breeding Increases productivity and efficiency in the breeding of organisms (increases profitability); e.g transgenic salmon grow faster and require less food than ordinary salmon Less efficient e.g. organisms grow slowly and may require more food 4. Experiments with individual cells can reproduce rapidly in the laboratory in a small container (i) Slow process (as it involves breeding over several generations) (ii) requires large areas of land/space 3. Genes are carefully selected before transfer into an organism. This reduces the risk of genetic defects being passed on to the offspring Both healthy and defective genes may be transmitted to the offspring 2. Gene from any plant or animal can be inserted in non-related species or different species Plants and animals need to be closely related or belong to the same species 1. Genetic Engineering Selective breeding