Ras is mutated in 30 of human tumors how does mutant

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Human Heredity: Principles and Issues
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Chapter 8 / Exercise 23
Human Heredity: Principles and Issues
Cummings
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19) Ras is mutated in 30% of human tumors. How does mutant Ras contribute to cancer? a) Sends a signal even without receiving one b) Does not send a signal, even after receiving one c) Binds PDGF even without receiving a signal d) Enters the nucleus and binds an enhancer, even without a signal e) Phosphorylates another protein, even without a signal
20) The p53 protein ITSELF
21) Why do plasmids used for cloning contain antibiotic resistance genes?
22) What is used to JOIN TOGETHER two pieces of DNA that have the same sticky ends?
23) The Ti plasmid a) Contains DNA that integrates into a plant chromosome b) Contains DNA that integrates into a bacterial chromosome. c) Contains DNA that integrates into an animal chromosome. d) Enhances the rate of gene transfer between bacteria. e) Is injected into animal cell nuclei to make transgenic animals.
24) Which sequence is likely to be a Restriction Enzyme recognition site?
25) What is a nucleic acid probe used for?
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Human Heredity: Principles and Issues
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Chapter 8 / Exercise 23
Human Heredity: Principles and Issues
Cummings
Expert Verified
Fall 2008 BIO 202 Practice Midterm Exam 4 & Final Exam 26) Gel electrophoresis separates DNA fragments based on differences in
Page 4
27) What is true of the two primers used in a PCR reaction? a) They are complementary to each other b) They base-pair to the same strand of template DNA c) They bind sequences that are palindromes d) They bind to sequences at each end of the region targeted for amplification e) They are used to make Okazaki fragments

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