Microbiology: A Systems Approach
5th Edition
ISBN: 9781259706615
Author: Marjorie Kelly Cowan Professor
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 25, Problem 12TF
Food products should always be kept completely free of microorganisms.
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Students have asked these similar questions
Three of the many recessive mutations in Drosophila melanogaster that affect body color, wing shape, or bristle morphology are black (b) body versus grey in wild type, dumpy (dp), obliquely truncated wings versus long wings in the male, and hooked (hk) bristles versus not hooked in the wild type. From a cross of a dumpy female with a black and hooked male, all of the F1 were wild type for all three of the characters. The testcross of an F1 female with a dumpy, black, hooked male gave the following results:
Trait
Number of individuals
Wild type
169
Black
19
Black, hooked
301
Dumpy, hooked
21
Hooked, dumpy, black
172
Dumpy, black
6
Dumpy
305
Hooked
8
Determine the order of the genes and the mapping distance between genes.
Determine the coefficient of confidence for the portion of the chromosome involved in the cross. How much interference takes place in the cross?
What happens to a microbes membrane at colder temperature?
Genes at loci f, m, and w are linked, but their order is unknown. The F1 heterozygotes from a cross of FFMMWW x ffmmww are test crossed. The most frequent phenotypes in the test cross progeny will be FMW and fmw regardless of what the gene order turns out to be.
What classes of testcross progeny (phenotypes) would be least frequent if locus m is in the middle?
What classes would be least frequent if locus f is in the middle?
What classes would be least frequent if locus w is in the middle?
Chapter 25 Solutions
Microbiology: A Systems Approach
Ch. 25.1 - Compose a sentence about the history of applied...Ch. 25.1 - Define biotechnology, and explain how its uses...Ch. 25.2 - Outline the steps in water purification.Ch. 25.2 - Differentiate water purification from sewage...Ch. 25.2 - Prob. 5AYPCh. 25.2 - Prob. 6AYPCh. 25.2 - List five important pathogens of drinking water.Ch. 25.2 - Provide examples of indicator bacteria, and...Ch. 25.2 - Summarize methods for identifying and quantifying...Ch. 25.3 - Name five foods and/or beverages that are produced...
Ch. 25.3 - Summarize the microbial process that leads to...Ch. 25.3 - Write the equation showing how yeasts convert...Ch. 25.3 - Discuss how microorganisms themselves are useful...Ch. 25.3 - Provide background on current HACCP guidelines,...Ch. 25.3 - Prob. 15AYPCh. 25.3 - Outline basic principles of using temperature to...Ch. 25.3 - List methods other than temperature currently used...Ch. 25.4 - Prob. 18AYPCh. 25.4 - Distinguish between primary and secondary...Ch. 25.4 - List the four steps of industrial product...Ch. 25.4 - Identify five industrial products made by...Ch. 25 - Drinking water utilities monitor their production...Ch. 25 - Milk is usually pasteurized by a. the...Ch. 25 - During sewage treatment, microbial action on a...Ch. 25 - Which of the following is unlikely to be a...Ch. 25 - The bloom in wine making refers to a. the...Ch. 25 - When algae produce biofuels, what is the other...Ch. 25 - Secondary metabolites of microbes are formed...Ch. 25 - In industrial fermentation, which step precedes...Ch. 25 - Which of the following is currently being produced...Ch. 25 - In biotechnology, fermentation refers to a. the...Ch. 25 - Prob. 11TFCh. 25 - Food products should always be kept completely...Ch. 25 - Alcoholic beverages are produced by the...Ch. 25 - Nutritional yeast is consumed by humans to...Ch. 25 - Refrigerating food prevents the growth of all...Ch. 25 - a.Summarize one beneficial use of sludge today,...Ch. 25 - Every year, supposedly safe municipal water...Ch. 25 - Provide evidence in support of or refuting the...Ch. 25 - a.List examples of microbes used in the production...Ch. 25 - Further investigate the HACCP system, and...Ch. 25 - From chapter 3, figure 3.5b. If this MacConkey...Ch. 25 - From chapter 8. During which portion of metabolism...Ch. 25 - Using the words that follow, please create a...
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