genetic engineering

• genetic engineering transfers genes between organisms
• in genetic engineering, a useful gene is isolated from one organism's genome using enzymes and is inserted into a vector. the vector is introduced to the target organisms and the useful gene is inserted into its cells.
• bacteria have been genetically modified to produce human insulin that can be used to treat diabetes
• genetically modified crops have had their genes modified to make them resistant to pests and diseases
• sheep have been genetically engineered to produce substances, like drugs, in their milk that can be used to treat human diseases