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CHAPTER 20 BIOTECHNOLOGY Name________________________ 20.1 DNA Cloning 1. Describe the natural function of restriction enzymes and explain how they are used in recombinant DNA technology. 2. Outline the procedures for cloning a eukaryotic gene in a bacterial plasmid. 3. Explain the rationale for including a gene for antibiotic resistance and a gene that codes for a hydrolytic enzyme in the plasmid. 4. Describe the role of an expression vector. 5. Describe two advantages of using yeast cells instead of bacteria as hosts for cloning or expressing eukaryotic genes. 6. Describe the structure and function of a yeast artificial chromosome (YAC). 7. Describe the polymerase chain reaction (PCR) and explain the advantages and limitations of this procedure. 20.2 Using DNA Technology to Explore Gene Function 8. Explain how gel electrophoresis is used to analyze nucleic acids and to distinguish between two alleles of a gene. 9. Describe the Southern blotting procedure and explain how it can be used to identify the heterozygous carriers of a mutant allele. 10. Explain how Northern blotting or the reverse transcriptase-polymerase chain reaction (RT-PCR) can be used to determine how expression of a gene changes at different stages of embryonic development. 11. Explain how in vitro mutagenesis and RNA interference help researchers to discover the functions of some genes. Learning Objectives for Campbell/Reece Biology, 8th Edition, © Pearson Education, Inc. 1 of 1