Essentials of Genetics (9th Edition) - Standalone book
9th Edition
ISBN: 9780134047799
Author: William S. Klug, Michael R. Cummings, Charlotte A. Spencer, Michael A. Palladino
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 15, Problem 7PDQ
For the genotypes and conditions (lactose present or absent) shown in the accompanying table, predict whether functional enzymes, nonfunctional enzymes, or no enzymes are made.
| Genotype | Functional Enzyme Condition Made |
Nonfunctional Enzyme Made |
No Enzyme Made |
| I+O+Z+ | No lactose | X | |
| I+OCZ+ | Lactose | ||
| I–O+Z– | No lactose | ||
| I–O+Z– | Lactose | ||
| I–O+Z+/F'I+ | No lactose | ||
| I+OCZ+/F'O+ | Lactose | ||
| I+O+Z–/F'I+O+Z+ | Lactose | ||
| I–O+Z–/F'I+O+Z+ | No lactose | ||
| ISO+Z+/F'O+ | No lactose | ||
| I+O+Z+/F'O+Z+ | Lactose |
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
What is/are the possible genotype(s) of an individual who is lactose tolerant?
The enzyme glucose oxidase isolated from the mold Penicillium notatum catalyzes the oxidation of
B-D-glucose to D-glucono-6-lactone. The enzyme is highly specific for the B anomer of glucose and does
not affect the a anomer. In spite of this specificity, the reaction catalyzed by glucose oxidase is
commonly used in a clinical assay for total blood glucose -that is, for solutions consisting of a mixture of
B- and a-D-glucose, as well as other sugars present in blood. The oxidation proceeds in the presence of
oxygen and forms hydrogen peroxide, in addition to the lactone. A second enzyme, called peroxidase,
catalyzes the reaction of hydrogen peroxide with colorless compounds to create a colored product,
which is quantified with a simple spectrophotometer. What are the circumstances required to make this
possible? Aside from allowing the detection of smaller quantities of glucose, what advantage does
glucose oxidase offer over the Fehling's reagent for measuring blood glucose?
Sydney Brennen isolated Salmonella typhimurium mutants that were implicated in the biosynthesis of tryptophan and would not grow on minimal medium supplemented with intermediates in tryptophan biosynthesis, some mutants were able to grow while others remained unable to grow. Review the data attached to order the biosynthetic pathway by both enzymatic step and by intermediate biomolecule. Label the step impacted by each of the mutant cell lines.
Chapter 15 Solutions
Essentials of Genetics (9th Edition) - Standalone book
Ch. 15 -
CASE STUDY | A mysterious muscular dystrophy
A...Ch. 15 -
CASE STUDY |A mysterious muscular dystrophy
A...Ch. 15 -
CASE STUDY |A mysterious muscular dystrophy
A...Ch. 15 -
HOW DO WE KNOW?
1. In this chapter, we have...Ch. 15 -
2. Review the Chapter Concepts list on p. 280....Ch. 15 - Describe which enzymes are required for lactose...Ch. 15 - Contrast positive versus negative regulation of...Ch. 15 -
5. Both attenuation and riboswitches rely on...Ch. 15 - For the lac genotypes shown in the accompanying...Ch. 15 -
7. For the genotypes and conditions (lactose...
Ch. 15 -
8. The locations of numerous lacI– and lacIs...Ch. 15 - Explain why catabolite repression is used in...Ch. 15 - Describe experiments that would confirm whether or...Ch. 15 - Predict the level of genetic activity of the lac...Ch. 15 - Predict the effect on the inducibility of the lac...Ch. 15 -
13. Describe the role of attenuation in the...Ch. 15 -
14. In a theoretical operon, genes A, B, C, and D...Ch. 15 - A bacterial operon is responsible for production...Ch. 15 - A marine bacterium is isolated and is shown to...Ch. 15 -
17. Why is gene regulation more complex in a...Ch. 15 -
18. List and define the levels of eukaryotic gene...Ch. 15 -
19. Distinguish between the cis-acting regulatory...Ch. 15 - Prob. 20PDQCh. 15 - Compare the control of gene regulation in...Ch. 15 - Many eukaryotic promoter regions contain CAAT...Ch. 15 -
23. What is RNA-induced gene silencing in...Ch. 15 - Although it is customary to consider...Ch. 15 - DNA methylation is commonly associated with a...Ch. 15 - The interphase nucleus appears to be a highly...Ch. 15 - It has been estimated that at least two-thirds of...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- A solution of [U 14C] glucose-1-phosphate (specific activity = 16,000 cpm/mmole) was incubated with glycogen and glycogen phosphorylase, an enzyme which adds glucose units on to glycogen. Radioactivity was incorporated into the glycogen primer at a rate = 2550 cpm/min. The rate of the enzymatic reaction in units of mmole glucose incorporated per minute is: (a) 0.016 mmol/min (b) 0.57 mmol/min (c) 0.16 mmol/min (d) 5.7 mmol/minarrow_forwardThe substrate which was used to investigate the enzymatic activity of wheat bran phosphatase was p-nitrophenyl phosphate. It is converted to p-nitrophenol and inorganic phosphate by this enzyme. P-nitrophenol has a pKa of 7.1 and is colorless, while its conjugate base, p-nitrophenolate has a yellow color. The enzyme assay was performed at pH 5.1 after the 0.5 N KOH is added at the end of each enzyme assay, the pH of the assay mixture is raised to 9.1. Why was the base added?arrow_forwardDescribe the mechanism of action of 1 cycle of the ubiquitin (Ub) ligase system. Describe how the E1, E2 and E3 ligases work to covalently link Ub to the target protein, including which uses an energy source (and how), and the operative amino acids on the enzymes, Ub and target proteinarrow_forward
- what are the molecular way to diagnose Lactose intolerance disorder ? describe in detail about diagnostic phenomena of lactose intolerance and possible treatment.arrow_forwardMatch the enzymatic activity with the proper description within the ubiquitin-proteasome pathway. Drag and drop options on the right-hand side and submit. For keyboard navigation... SHOW MORE ✓ E1 E2 E3 Proteasome = ||| = ||| = ||| Degradation Ubiquitin-activating enzymes Ubiquitin-conjugating enzymes. Ubiquitin ligasesarrow_forwardThe pathway shown below is used by a fungus to create Fructose-1,6-diphosphate from glucose. A silent mutation occurs in the gene that encodes enzyme 3. This fungus is grown on media that only contains the precursor. Discuss the effects of this mutation on: (i) The function of Enzyme 3 (ií) The production of Fructose-1,6-diphosphate Enzyme 1 Glucose-6- Enzyme 2 fructose-6- Enzyme 3 Fructose-1,6- Glucose phosphate phosphate diphosphatearrow_forward
- Proteinase K should be used as the first step of DNA purification (before applying phenol CIA mixture) to remove most proteins. Proteinase K alone cannot remove all proteins from the lysate. Explain why the Proteinase K enzyme cannot remove ALL proteins from the cell lysate.arrow_forwardPyridoxal phosphate (PLP) is a coenzyme for the enzyme ornithine aminotransferase. The enzyme was purified from cells grow in PLP = deficient media as well as from cells grown in media that contained pyridoxal phosphate. The stability of the two different enzyme preparations was then measured by incubating the enzyme at 37°C for different lengths of time and then assaying for the amount of enzyme activity remaining. The following results were obtained. (a) Why does the amount of active enzyme decrease with the time of incubation? (b) Why does the amount of enzyme from the PLP deficient cells decline more rapidly?arrow_forwardThe peptide Leu-Cys-Arg-Ser-Gln-Met is subjected to Edman degradation. After the first cycle of this process, the products that are generated are: O PTH-Leu, PTH Cys, PTH-Arg. PTH-Ser, PTH-GIn, and PTH-Met O PTH-Leu-Cys-Arg-Ser-Gin-Met O PTH-Met and Leu-Cys-Arg-Ser-Gin-Met O PTH-Leu-Cys and PTH-Arg-Ser-Gin-Met O PTH-Leu and Cys-Arg-Ser-Gln-Metarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSON
Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax
Anatomy & PhysiologyBiologyISBN:9781259398629Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa StouterPublisher:Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)BiologyISBN:9780815344322Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter WalterPublisher:W. W. Norton & Company
Laboratory Manual For Human Anatomy & PhysiologyBiologyISBN:9781260159363Author:Martin, Terry R., Prentice-craver, CynthiaPublisher:McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)BiologyISBN:9781260231700Author:Sylvia S. Mader, Michael WindelspechtPublisher:McGraw Hill Education
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:PEARSON
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Anatomy & Physiology
Biology
ISBN:9781259398629
Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)
Biology
ISBN:9780815344322
Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter
Publisher:W. W. Norton & Company
Laboratory Manual For Human Anatomy & Physiology
Biology
ISBN:9781260159363
Author:Martin, Terry R., Prentice-craver, Cynthia
Publisher:McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)
Biology
ISBN:9781260231700
Author:Sylvia S. Mader, Michael Windelspecht
Publisher:McGraw Hill Education
Macromolecules | Classes and Functions; Author: 2 Minute Classroom;https://www.youtube.com/watch?v=V5hhrDFo8Vk;License: Standard youtube license