Genetics: From Genes To Genomes (6th International Edition)
6th Edition
ISBN: 9781260041217
Author: Leland Hartwell Dr., ? Michael L. Goldberg Professor Dr., ? Janice Fischer, ? Leroy Hood Dr.
Publisher: Mcgraw-Hill
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Textbook Question
Chapter 18, Problem 8P
| a. | Describe two ways you could potentially make a transgene that would inhibit the function of a specific gene in a transgenic organism. (Hint: For one of these techniques, recall the discussion of RNA interference in Chapter 17.) |
| b. | Discuss how you could use either of these methods to construct a mouse model for a recessive human genetic condition associated with a loss of function, such as cystic fibrosis. |
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The ability to selectively modify the genome in the mouse has revolutionized mouse genetics. Outline the procedure for generating a knockout mouse at a specific genetic locus. How can the loxP-Cre system be used to conditionally knock out a gene? What is an important medical application of knockout mice?
Chapter 18 Solutions
Genetics: From Genes To Genomes (6th International Edition)
Ch. 18 - Match each of the terms in the left column to the...Ch. 18 - Mice are usually gray, but a mouse geneticist has...Ch. 18 - Sometimes, genes transferred into the mouse genome...Ch. 18 - In mice, a group of so-called Hox genes encode...Ch. 18 - The fly eyes shown in Fig. 18.7 are malformed...Ch. 18 - This problem concerns a technique called enhancer...Ch. 18 - Fish and other organisms that live in the Arctic...Ch. 18 - a. Describe two ways you could potentially make a...Ch. 18 - Figure 18.6 shows a picture of Glofish ,...Ch. 18 - Some people are concerned about the possible...
Ch. 18 - The goal of the Knockout Mouse Project is to...Ch. 18 - Prob. 12PCh. 18 - Prob. 13PCh. 18 - a. Which genome manipulation technique would you...Ch. 18 - a. Diagram a knockin construct that could have...Ch. 18 - Prob. 16PCh. 18 - Prob. 17PCh. 18 - The transcription factor Pax6 is required...Ch. 18 - Mouse models for human genetic diseases are...Ch. 18 - One way to determine where inside a cell a protein...Ch. 18 - In Problem 5 in Chapter 17, you saw that a SNP...Ch. 18 - Scientists now routinely use CRISPR/Cas9 to make...Ch. 18 - Geneticists are currently considering using...Ch. 18 - a. Figures 18.9 and 18.12 demonstrated methods to...Ch. 18 - Nonhomologous end-joining NHEJ of a double-strand...Ch. 18 - One problem that researchers sometimes encounter...Ch. 18 - Researchers at the University of California at San...Ch. 18 - Prob. 28PCh. 18 - F. Port and S. Bullock at the University of...Ch. 18 - On Fig 18.14, locate the PAM site and identify the...Ch. 18 - Prob. 31PCh. 18 - Prob. 32PCh. 18 - Recall that Leber congenital amaurosis LCA, a form...Ch. 18 - One potential strategy for gene therapy to correct...Ch. 18 - Recently, scientists have used a mouse model for...
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- a. What type of plot is this? What do the little dots above the dotted line represent? b. The labels above the peaks represent human gene names involved in ALS. Based on the data shown here, which would be the first gene you'd like to investigate further and why?arrow_forwardPlease explain in detailarrow_forwardYou are studying celiacs disease and have identified a potential gene for the disease using linkage analysis. You decide to test your hypothesis by making transgenic mice that carry a nonsense mutation in the candidate gene you have identified to see if they develop a phenotype similar to that found in Celiacs disease What sort or experimental approach are you using when you test your gene in your mouse model? a. Reverse genetic b. Quantitative genetic C. Forward genetic D.Expression analysis E. None of the abovearrow_forward
- Not all inherited traits are determined by nuclear genes (i.e., genes located in the cell nucleus) that are expressed during the life of an individual. In particular, maternal effect genes and mitochondrial DNA are notable exceptions. With these ideas in mind, let’s consider the cloning of a sheep (e.g., Dolly). A. With regard to maternal effect genes, is the phenotype of such a cloned animal determined by the animal that donated the enucleatedegg or by the animal that donated the somatic cell nucleus? Explain.arrow_forwardThe restriction digests of the cloned Drosophila gene can provide direct visible evidence of a mutation, as these samples come from a clone of the gene. In order to similarly detect a mutation in the copy of the endogenous gene within the Drosophila genome, a mechanism for specifically detecting restriction fragments from that gene among the complex set of fragments generated in a restriction digest of the entire Drosophila genome. Remember that the Drosophila melanogaster genome consists of ~123,000 kb. For a 10.2 kb Drosophila gene, what fraction of the genome does this gene constitute?arrow_forwardPlease consider providing a detailed explanation. Do not copy from previously provided solutionsarrow_forward
- Leber Congenital Amaurosis (LCA) causes progressive vision loss due to defects in the gene that encodes RPE65 isomerase. Affected individuals are homozygous recessive for mutant alleles of the RPE65 gene. You are trying to determine the molecular nature of the mutations in three individuals with LCA. For ease of analysis, you may assume that each individual is homozygous for the same mutant allele (though the three individuals have different mutations than each other). You use the polymerase chain reaction to amplify DNA from each patient and you determine the sequence of the DNA and compare it to unaffected individuals. You identify the following differences. Note that the non-template strand of DNA is given and the changes are highlighted using red boldface. You can assume that the sequences are in the first reading frame (eg. the first three nucleotides of each sequence is a codon). The coding region of the gene is 1602 bp and the position of the sequences shown below is…arrow_forward1). In the absence of this enzyme, a substance called ceroid lipofuscin accumulates in lysosomes in the brain, resulting in seizures, blindness, decline in cognitive function and motor skills, dementia, and death by the late teens or early 20’s. The TPP1 gene is 6695 bp in length. Think about the characteristics of Batten disease, and then suggest an approach to gene therapy that might be effective for this specific genetic disorder. You may assume that your research team is working in the U.S. and your research is funded by a grant from the National Institutes of Health (NIH). a) Hypothetically, what specific type of VECTOR will you use to perform your gene therapy? Please select from the following list of potential vectors: disabled retrovirus, adenovirus, adeno-associated virus (AAV), or herpes simplex virus (HSV), then give two reasons why this specific vector is the most appropriate for your gene therapy. Please explain why you were able to rule out the other potential…arrow_forward1). In the absence of this enzyme, a substance called ceroid lipofuscin accumulates in lysosomes in the brain, resulting in seizures, blindness, decline in cognitive function and motor skills, dementia, and death by the late teens or early 20’s. The TPP1 gene is 6695 bp in length. Think about the characteristics of Batten disease, and then suggest an approach to gene therapy that might be effective for this specific genetic disorder. You may assume that your research team is working in the U.S. and your research is funded by a grant from the National Institutes of Health (NIH). Please EXCLUDE the use of CRISPR from consideration. A. Will you use germline or somatic cell gene therapy? Please NAME and DEFINE the form of gene therapy selected, then explain WHY this is the most appropriate choice.arrow_forward
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Mitochondrial mutations; Author: Useful Genetics;https://www.youtube.com/watch?v=GvgXe-3RJeU;License: CC-BY