Answered: 1. After exposure to a mutagen an A-T…

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter18: Dna Technologies: Making And Using Genetically Altered Organisms, And Other Applications

Section: Chapter Questions

Problem 3TYK: Why are antibiotic resistance markers such as ampR important components of bacterial plasmid cloning...

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1. After exposure to a mutagen an A-T base pairing becomes T-A in the daughter cell. This is an example of: A. Transition B. Transversion C. Transport D. Transfection 2. A mutation in the promoter region of a gene would be expected to be: A. Activating B. Cis-acting C. Null D. Trans-acting 3. A locus can be best defined as: A. A region within a chromosome containing multiple genes B. The genetic position of a mutation C. A type of insect that eats crops D. The location of a gene within the chromosome 4. Which of the following events is not possible in a living cell: A. Information in RNA to be copied into DNA B. Information in DNA to be copied into RNA C. Information in RNA to be copied into a polypeptide D. Information in a polypeptide to be copied into RNA 5. The enzymes that control DNA supercoiling by introducing nicks in one strand are known as: A. DNA polymerases B. Topoisomerases C. Restriction enzymes D. RNA polymerases 6. A null mutation is best defined as one that results in a gene product (i.e. a protein) that: A. Causes the formation of cancer B. Causes the organism that carries it to die C. Is non-functional D. Causes developmental abnormalities 7. The genome can be best defined as: A. The complete sequence of DNA that provides the full set of hereditary information carried by the organism’s cells B. The complete sequence of DNA within all the chromosomes C.The complete sequence of DNA that provides the full set of hereditary information carried by the germ cells D. The contents of the cell’s nucleus 8. An allele can be best defined as: A. A mutation B. A particular version of a gene C. A chromosomal aberration D.A gene found only on the X-chromosome 9.In the human ABO blood group system, which of the following represents a null allele: A. 0 B. A C. B D.AB 10. The wrapping of DNA strands around each other in the opposite direction to the strands in the double helix can be best described as: A. B to Z form transition B. Negative supercoiling C.Positive supercoiling D. Overwinding

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