Genetics: Analysis and Principles
6th Edition
ISBN: 9781259616020
Author: Robert J. Brooker Professor Dr.
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 9, Problem 1EQ
Genetic material acts as a blueprint for an organism’s traits. Explain how Griffith’s experiments indicated that genetic material was being transferred to the type R bacteria.
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Chapter 9 Solutions
Genetics: Analysis and Principles
Ch. 9.1 - In the experiment of Avery, McLeod, and McCarty,...Ch. 9.1 - In the Hershey and Chase experiment involving T2...Ch. 9.2 - Going from simple to complex, which of the...Ch. 9.3 - Which of the following could be the components of...Ch. 9.3 - Prob. 2COMQCh. 9.4 - Prob. 1COMQCh. 9.5 - Prob. 1COMQCh. 9.5 - Prob. 2COMQCh. 9.6 - 1. Which of the following is not a feature of the...Ch. 9.6 - 2. A groove in the DNA refers to
a. the...
Ch. 9.6 - Prob. 3COMQCh. 9.7 - 1. A double-stranded region of RNA
a. forms a...Ch. 9 - 1. What is the meaning of the term genetic...Ch. 9 - Prob. 2CONQCh. 9 - 3. Look up the meaning of the word transformation...Ch. 9 - Prob. 4CONQCh. 9 - 5. Draw the structures of guanine, guanosine, and...Ch. 9 - Prob. 6CONQCh. 9 - 7. Describe how bases interact with each other in...Ch. 9 - Prob. 8CONQCh. 9 - 9. What is meant by the term DNA sequence?
Ch. 9 - Make a side-by-side drawing of two DNA helices:...Ch. 9 - 11. Discuss the differences in the structural...Ch. 9 - What part(s) of a nucleotide (namely, phosphate,...Ch. 9 - List the structural differences between DNA and...Ch. 9 - Draw the structure of deoxyribose and number the...Ch. 9 - Write a sequence of an RNA molecule that could...Ch. 9 - Compare the structural features of a...Ch. 9 - Which of the following DNA double helices would be...Ch. 9 - What structural feature allows DNA to store...Ch. 9 - Prob. 19CONQCh. 9 - Prob. 20CONQCh. 9 - Prob. 21CONQCh. 9 - 22. On further analysis of the DNA described in...Ch. 9 - Prob. 23CONQCh. 9 - Prob. 24CONQCh. 9 - In what ways are the structures of an helix in a...Ch. 9 - Prob. 26CONQCh. 9 - Prob. 27CONQCh. 9 - 28. What chemical group (phosphate group, hydroxyl...Ch. 9 - The base composition of an RNA virus was analyzed...Ch. 9 - Prob. 30CONQCh. 9 - Prob. 31CONQCh. 9 - Prob. 32CONQCh. 9 - Prob. 33CONQCh. 9 - As described in Chapter 15, the methylation of...Ch. 9 - 35. An RNA molecule has the following sequence:...Ch. 9 - 1. Genetic material acts as a blueprint for an...Ch. 9 - 2. With regard to the experiment described in...Ch. 9 - Prob. 3EQCh. 9 - Prob. 4EQCh. 9 - 5. With regard to Chargaff’s experiment described...Ch. 9 - 6. Gierer and Schramm exposed plant tissue to...Ch. 9 - 1. Try to propose structures for a genetic...Ch. 9 - Prob. 2QSDC
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- Researchers are designing several experiments to test the ability of Salmonella bacteria to develop antibiotic resistance. A culture of Salmonella bacteria is exposed to the same concentrations (200 mg/L) of an antibiotic for four days. The table shows the number of isolated resistant bacteria over a four-day period. Which of the following statements best explains these results? A - The bacteria were not affected by the antibiotic. B - After being exposed to the antibiotic, the bacteria altered their DNA. C - A new species of bacteria emerged after the antibiotics were introduced. D - Random mutations led some bacteria to be resistant and, over time, they increased in the population.arrow_forwardYou are a researcher working at Ann's Herbal Farm. The owner of the farm would like you to create a new breed of orchids that could glow in the dark by incorporating jellyfish genes into its genome. Describe briefly the creation of this transgenic plant using nature's genetic engineer, a soil bacterium. State the name of the bacterium in your description.arrow_forwardWhat is transformation? Describe Grifith’s experiment to show transformation? What did he prove from his experiment?arrow_forward
- In another experiment, Griffith mixed heat killed S strain with live R strain bacteria and injected the mixture into mice. A. What strain of the bacteria was found in the blood samples of the mice? B. What were the results of this experiment? C. What conclusion did he reach based on these results?arrow_forwardHershey and Chase used radioactive components to tag protein and DNA before infecting bacteriophage. What was the most important concept demonstrated by Hershey-Chase experiments? Explain the experiment in detail.arrow_forwardYou mutagenized bacteria and isolated two mutants that you suspected to be defective in DNA synthesis. You measured incorporation of radioactivity (Y- axis) for various times (X-axis) at two temperatures (30 deg C shown as open circles and 40 deg C shown a filled circles in both figures) for the two mutants of bacteria (left and right figures). For this experiment, you can conclude that 20,000 1,000 30° 0- 40° 15,000- 10,000- 500 5,000- 0 40 40 80 120 120 0 Time (min) None of these conclusions O You have isolated a component of RNA synthesis that is temperature insensitive You have isolated mutants that are temperature insensitive You have isolated temperature-sensitive mutants that are defective in DNA synthesis O You have isolated a component of protein synthesis ³H-thymidine incorporated (cpm) O 80arrow_forward
- Taxol is a compound used in cancer treatment. You are working for Genentech on a project to optimize the production of taxol purified from recombinant E. coli bacteria. You have two new strains of SuperGro E. coli: Strain A and Strain B, that you have engineered to express taxol. You want to know which of the two SuperGro E. coli strains is better to use for purifying taxol based on the amount you purify (measured by final concentration of protein in mg/mL). You also want to know which growth media (LB Media or SOC Media) results in a higher amount of purified taxol. You collect data and plot the average final concentration of taxol from each experimental condition in the graph below. Use the approach we discussed in class and write your analysis and interpretation of the data (describe the graph, describe the data, and interpret the data). Make sure to give clear and complete descriptions. A. Describe the graph: B. Describe the data: C. Describe the interpretation:arrow_forwardIn Oswald Avery experiment, two strains of pneumococcus bacteria were used to infect mice. Explain how the experiment discovered that DNA is the transformation agent.arrow_forwardConsidering the proclivity of bacteria to share genetic information, discuss the concerns behind phenomena such as antibiotic resistance. In other words, why might it be a bad idea to not finish your antibiotic therapy as prescribed by your physician? Some people think that "saving some for later" is a good idea. Why might that not be the case?arrow_forward
- Bacteria and other microbes can be used to "clean up" an oil spill by breaking down oil into carbon dioxide and water. Two samples isolated from the Deepwater Horizon leak in the Gulf of Mexico were labeled A and B. The DNA of each was isolated and the percent thymine measured in each sample. Sample A contains 18.1% thymine and sample B contains 28.9% thymine. Assume the organisms contain normal double-stranded DNA and predict the composition of the other bases. percent adenine in sample A: SA percent guanine in sumple A: percent cytosine in sample A: percent adenine in sample B}: percent guanine in sample B 5 percent cytosine in sample B Beth samples are then denatured to remove the secondary structure. Which will have the higher temperature to densture!arrow_forwardb ) Describe the contribution of Griffith , Avery et al . , Hershey & Chase , and Watson and Crick in the field of genetics . You are characterizing a newly discovered organism . You have noticed that the organism grows on two carbon sources - sucrose and mannitol . Whenever you add both sugars to the medium , sucrose will be completely metabolized before mannitol . a ) What is this growth pattern called ? b ) Describe a possible growth curve of sequential metabolism of the sugars . arrow_forwardIn DNA-hybridization experiments on six species of plants in the genus Vicia, DNA was isolated from each of the six species, denatured by heating, and sheared into small fragments (W. Y. Chooi. 1971. Genetics 68:213–230). In one experiment, DNA from each species and from E. coli was allowed to renature. The graph shows the results of this renaturation experiment. Q. Can you explain why the E. coli DNA renatures at a much faster rate than does DNA from any of the Vicia species?arrow_forward
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