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Question: an enzyme that cuts dna into restriction fragments ba dna...

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an enzyme that cuts DNA into restriction fragments B)a DNA probe used to locate a particular gene in the genome 15. What is a cloning vector? C) an agent, such as a plasmid, used to transfer DNA from an in living cell D) the laboratory apparatus used to clone genes E) the sticky end of a DNA fragment 16. The following statement is true about a proto-oncogene mutation to induce cell division of a mammalian cell: A) proto-oncogene product must have an increased the activity. proto-oncogene product must have decreased activity C) tumor suppressor gene product must have an increased activity. D) proto-oncogene must lose ability to express mRNA oints ion to induce 17. The following statement is true about a tumor suppressor gene mutat cell division of a mammalian cell: A) proto-oncogene product must have decreased activity B) tumor suppressor gene product must lose activity C) tumor suppressor gene product must have an increased activity. D) proto-oncogene must lose ability to express mRNA. 015 18. Incidence of cancer in human increases with age suggesting that: A) cancer is an infectious disease. B) multiple mutations are required to develop cancer C) cancer gene(s) cannot acquired in lifetime. D) none of the above are 5 19. Plasmids are important in biotechnology because they are: A) a vehicle for the insertion of foreign genes into bacteria. B) recognition sites on recombinant DNA strands. C) surfaces for protein synthesis in eukaryotic recombinants. D) surfaces for respiratory processes in bacteria. E) provinuses incorporated into the host DNA 20. What is the enzymatic function of restriction enzymes? A) to add new nucleotides to the growing strand of DNA B) to join nucleotides during replication C) to join nucleotides during transcription D) to cleave nucleic acids at specific sites E) to repair breaks in sugar-phosphate backbones point
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