Check for understanding 1. Give two examples of environmental factors which increase mutation rates. 2. Why are mutations important? 3. Give two methods by which a bacterium can pass on the genetic material for antibiotic resistance to other bacteria. 4. What is a gene probe? 5. Name a second method of locating genes on a chromosome. 6. Which part of a bacterium’s genetic material can be used as a vector? 7. Explain how sticky ends aid the addition of genetic material to a vector. 8. Name the two types of enzyme used to splice genes into bacterial plasmids and describe the function of each. 9. Name a strain of bacteria and a strain of fungi commonly used in genetic engineering processes. 10. Describe the role of Agrobacterium tumefaciens in the production of a transgenic crop plant. 11. Give two examples of transgenic crop plants and their economic benefits to humans. UNIT 3, METABOLISM AND SURVIVAL (H, BIOLOGY) © Learning and Teaching Scotland 2011