Biology
12th Edition
ISBN: 9781260494570
Author: Raven, Peter
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Textbook Question
Chapter 18.1, Problem 2LO
Describe the pros and cons of restriction mapping, chromosome mapping, and mapping by STS.
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a. How do scientists apply the concept of linkage disequilibrium to identify disease alleles?
b. Which specific phrase is used when such markers are identified by restriction endonucleases and a particular set of DNA fragments is generated?
STR markers:
are point mutations detectable by DNA sequencing
are variations in the number of repeats of very short DNA motifs (2-10 nucleotides)
□have high polymorphism
are mutations leading to proteins or blood groups that can be differentiated by antigenic testing from a blood sample
☐have low polymorphism
no correct answer
are changes of a few nucleotides leading to the absence or presence of a site recognized by a restriction enzyme
are variations in the number of repeats of medium-sized DNA motifs (10-100 nucleotides)
can be located in coding sequences
are located exclusively on autosomes
What is the role of X-gal? What color will cells with the plasmid be in the absence of X-gal? Why?
Chapter 18 Solutions
Biology
Ch. 18.1 - Prob. 1LOCh. 18.1 - Describe the pros and cons of restriction mapping,...Ch. 18.1 - Prob. 3LOCh. 18.2 - Discriminate between dideoxy terminator sequencing...Ch. 18.2 - Prob. 2LOCh. 18.3 - Describe the findings of the Human Genome Project.Ch. 18.3 - Prob. 2LOCh. 18.3 - Prob. 3LOCh. 18.4 - Prob. 1LOCh. 18.4 - Prob. 2LO
Ch. 18.4 - Prob. 3LOCh. 18.5 - Prob. 1LOCh. 18.5 - Prob. 2LOCh. 18.5 - Prob. 3LOCh. 18.6 - Prob. 1LOCh. 18 - Prob. 1DACh. 18 - If the human genome contains approximately 3...Ch. 18 - Prob. 1IQCh. 18 - Prob. 2IQCh. 18 - Prob. 3IQCh. 18 - Prob. 4IQCh. 18 - Prob. 5IQCh. 18 - Prob. 6IQCh. 18 - A genetic map provides a. the sequence of the DNA...Ch. 18 - Prob. 2UCh. 18 - Approximately how many genes are there in the...Ch. 18 - An open reading frame (ORF) is distinguished by...Ch. 18 - What is a BLAST search? a. A mechanism for...Ch. 18 - Prob. 6UCh. 18 - Prob. 7UCh. 18 - Prob. 8UCh. 18 - Prob. 1ACh. 18 - Prob. 2ACh. 18 - Prob. 3ACh. 18 - Prob. 4ACh. 18 - What information can be obtained from a DNA...Ch. 18 - Prob. 6ACh. 18 - Prob. 7ACh. 18 - You are in the early stages of a genome-sequencing...Ch. 18 - Genomic research can be used to determine if an...
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- a. Explain what hybridization is and how it is used in the Southern blot.b. Explain how gene probes and FISH techniques work.arrow_forwardExplain how site directed mutagenesis can be accomplished using M13 bacteriophage. Using this method often results in only 5% of plaques with mutant gene. Explain how the procedure has been modified to enrich for the number of plaques with the mutant gene.arrow_forwardDescribe what process leads to gene conversion. What are the consequences of gene conversion for carriers of genetic diseases, such as BRCA mutations?arrow_forward
- Describe the multiple strand displacement method and how this technique is usedarrow_forwardDraw a diagram depicting the 4 steps of base excision repair, and give a short description of what is going on in each step..arrow_forwardDescribe and give examples of direct reversal of DNA damage.arrow_forward
- Explain how DNA microarrays are used in molecular profiling ofcancerous tumors.arrow_forwardDescribe what will happen to bacteria with dysfunctional restriction modification system providing that restrictase (first scenario) or methylase (second scenario) is not functional when it gets attacked by phage or by another bacterial species. T: BIarrow_forwardPinpointing a disease gene requires a combination of approaches. Mutations in the XIAP gene are known to cause a serious condition called X-linked lymphoproliferative disease (XLPD). In the case of XLPD, in which the blood contains too many lymphocytes (white blood cells of the immune system), crowding out the oxygen-carrying red blood cells and damaging the liver. When compairing the XIAP amino acid sequence of one affected patient to other human and animal standard RefSeq, the patient has an amino acid substitution at position 203, from cystenine (C) to tyrosing (Y). This evolutionary conservation suggests Group of answer choices that the standard RefSeq does not provide enough information to determine a possible cause of XIAP function. mutations in the XIAP gene and XLPD are not associated. that the mutation in the affected patient has no impact on XIAP function. that the mutation in the affected patient might alter XIAP function.arrow_forward
- Cre-Lox system is used for site-specific modification of DNA for genetic engineering applications. The reporter gene construct shown below is used to test the Cre-Lox system. Cells are transfected with the construct shown below and the activity of the constructs is determined by visualizing the cells with a fluorescence microscope. Match the following conditions with the expected cell observations. Hint: Make sure you note the position of the Start and Stop. The GFP and RFP genes shown do not have start codons. Cre/Lox Reporter Gene ATG LoxP CMV-Pro A. No Expression GFP Stop B. GFP Only LoxP Absence of Cre Cells treated with drug that induces expression of Cre RFP C. RFP Only A. Image A B. Image B C. Image C D Image D express ? D. RFP and GFParrow_forwardWhat Genetic Conditions Are Candidates for Treatment by GeneTherapy?arrow_forwardIn the genotype presented (genomic plus plasmid genes), which of the following statements Is phenotype? genome: IS P O`z+Y° plasmid: I* Pt otzY+ no production of either B-gal and permease O B-gal and permease induced when lactose is present no B-gal is produced and expression of permease when lactose is present constitutive expression of B-gal and permease constitutive expression of B-gal and no expression of permeasearrow_forward
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