Genetic Analysis: An Integrated Approach (2nd Edition)
2nd Edition
ISBN: 9780321948908
Author: Mark F. Sanders, John L. Bowman
Publisher: PEARSON
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Chapter 12, Problem 5P
Thymine is usually in its normal, common form. Diagram the base pair that would result if a tautomeric shift occurs just before
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Chapter 12 Solutions
Genetic Analysis: An Integrated Approach (2nd Edition)
Ch. 12 - 11.1 Identify two general ways chemical mutagens...Ch. 12 - 11.2 Nitrous acid and (BU) alter DNA by different...Ch. 12 - 11.19 Using the adeninethymine base pair in this...Ch. 12 - The partial amino acid sequence of a wild-type...Ch. 12 - 5. Thymine is usually in its normal, common form....Ch. 12 - Ultraviolet (UV) radiation is mutagenic.
What...Ch. 12 - Researchers interested in studying mutation and...Ch. 12 - The effect of base - pair substitution mutations...Ch. 12 - Prob. 9PCh. 12 - 11.10 In numerous population studies of...
Ch. 12 - 11.11 Two different mutations are identified in a...Ch. 12 - 11.22 Many human genes are known to have homologs...Ch. 12 - 11.13 Answer the following questions concerning...Ch. 12 - Prob. 14PCh. 12 - Prob. 15PCh. 12 - Prob. 16PCh. 12 - 11.15 A sample of the bacterium is exposed to...Ch. 12 - 11.16 A strain of is identified as having a null...Ch. 12 - Define gene conversion and contrast it with gene...Ch. 12 - Prob. 20PCh. 12 - Prob. 21PCh. 12 - Prob. 22PCh. 12 - Prob. 23PCh. 12 - Prob. 24PCh. 12 - 25. If homologous recombination did not occur,...Ch. 12 - In this chapter, three features of genes or of DNA...Ch. 12 - Briefly compare the production of DNA double -...Ch. 12 - During mismatch repair, why is it necessary to...Ch. 12 - 11.27 Following the spill of a mixture of...Ch. 12 - A geneticist searching for mutations uses the...Ch. 12 - A wild - type culture of haploid yeast is exposed...Ch. 12 - A fragment of a wild - type polypeptide is...Ch. 12 - Prob. 33PCh. 12 - 11.40 Common baker’s yeast () is normally grown at...Ch. 12 - 11.41 The two gels illustrated below contain...Ch. 12 - Alkaptonuria is a human autosomal recessive...Ch. 12 - 11.33 In an experiment employing the methods of...Ch. 12 - Using your knowledge of DNA repair pathways choose...Ch. 12 - 11.35 Ataxia telangiectasia is a human inherited...Ch. 12 - 40. Two haploid strains of fungus are fused to...
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- Although A-form, B-form, and Z-form DNA are all left-handed, they exhibit different physical properties due to their different numbers of bases per turn. True Falsearrow_forwardIn chromosomes, doubly-stranded DNA wraps tightly around histone proteins. Think about the structure of DNA, especially the "backbone," and determine what category of amino acids make up the majority of histones: Histone Octamer tetramer dimer HZA dimer dimer dimer Histone "fastener" Here the blue represents histones, and the red is the DNA strand. To help the DNA fold up in an aqueous environment, the histones are nonpolar to exclude water, so many of the amino acid side chains are nonpolar. The backbone of DNA is the alternating phosphate-sugar part, and the phosphate is negatively charged. Positive charges on the histone residues will bind tightly here, so the acidic amino acids are used here. The backbone of DNA is the alternating phosphate-deoxyribose part, and the phosphate is negatively charged. Positive charges on the histone residues will bind tightly here, so the basic amino acids are used here. The histones are strongly attracted to the hydrogen-bonding of the base pairs, so…arrow_forwardShow the expected labeled cleavage products if the following DNA segment were subjected to each of the four cleavage reactions: 32P-A-A-C-A-T-G-G-C-G-C-T-T-A-T-G-A-C-G-Aarrow_forward
- DNA replication of the lagging strand is as a result of 2 factors. Name these (2)arrow_forwardThe ethidium bromide added to the agarose gels intercalates within the base pairs of the DNA double helix as it travels through the gel. Exposure to UV light causes the ethidium bromide to fluoresce, thus allowing for visualization of any DNA. How might this tendency of ethidium bromide to intercalate within the DNA double helix attribute to its carcinogenic properties in living organisms?arrow_forwardTick the correct statements: Remember: Tautomers are structural isomers that differ from each other based on the position of the proton(s) and their double bonds. ( ) The nitrogenous bases of nucleic acids, which contain heterocyclic and analogous nuclei, can adopt different tautomeric forms involving multiple H+ that are exchangeable depending on the medium. In DNA, spontaneous formation of smaller tautomers appears to contribute to mutagenic errors during DNA replication, while in RNA, they seem to be related to increased structural and functional diversity of enzymes and RNA aptamers (research this and confirm if it is false or real) ( ) in relation to the figure, anomer 1 has beta stereochemistry with respect to the C anomeric of the pentose, and is making an N-glycosidic bond ( ) in relation to the figure, anomer 1 has alpha stereochemistry with respect to the C anomeric of the pentose, and is making an N-glycosidic bond ( ) In general, in naturally occurring nucleosides,…arrow_forward
- Introduction: The enzyme deoxyribonuclease I (DNase I) is an endonuclease that hydrolyzes the phosphodiester bonds of the double-stranded DNA backbone to yield small oligonucleotide fragments. DNase I is used therapeutically to treat patients with cystic fibrosis (CF). The DNase I enzyme is inhaled into the lungs where it then acts upon the DNA contained in the viscous sputum secreted by the lungs in these patients. Hydrolysis of high molecular weight DNA to low molecular weight DNA in the sputum decreases its viscosity and improves lung function. Animal studies have shown that DNase I is also effective in treating the autoimmune disease systemic lupus erythematosus (SLE). In this disease, the DNA secreted into the serum provokes an immune response. DNase I prevents the immune response by degrading the DNA to smaller fragments that are not recognized by the immune system. Genentech, Inc., the company that produces the recombinant DNase I, was interested in improving the efficiency of…arrow_forwardIntroduction: The enzyme deoxyribonuclease I (DNase I) is an endonuclease that hydrolyzes the phosphodiester bonds of the double-stranded DNA backbone to yield small oligonucleotide fragments. DNase I is used therapeutically to treat patients with cystic fibrosis (CF). The DNase I enzyme is inhaled into the lungs where it then acts upon the DNA contained in the viscous sputum secreted by the lungs in these patients. Hydrolysis of high molecular weight DNA to low molecular weight DNA in the sputum decreases its viscosity and improves lung function. Animal studies have shown that DNase I is also effective in treating the autoimmune disease systemic lupus erythematosus (SLE). In this disease, the DNA secreted into the serum provokes an immune response. DNase I prevents the immune response by degrading the DNA to smaller fragments that are not recognized by the immune system. Genentech, Inc., the company that produces the recombinant DNase I, was interested in improving the efficiency of…arrow_forwardExplain why DNA replication is slightly slower in the lagging strand of DNA than in the leading strand.arrow_forward
- A deamination occurs on the cytosine residue in the following DNA sequence. This cytosine residue happens to be methylated on the 5-position of the aromatic ring. 5'-GCATGG-3'. (Note: the top strand is shown; this is the strand where the deamination occurs.) If the mutation is not repaired, and a round of DNA replication occurs, then the sequence of the newly- replicated complementary strand (i.e., the bottom strand) will be: A. 5'-CCATGC-3 B. 5'-CCATAC-3' C. 5'-CATACC-3' D. 5'-GTATGG-3' E. None of the abovearrow_forwardAs you should recall, DNA, when not being actively transcribed, has a double helical structure. This portion of the DNA has had the two strands separated in preparation of transcribing for a needed protein. The following is one of the two complimentary strands of DNA: 3' - AACCAGTGGTATGGTGCGATGATCGATTCGAGGCTAAAATACGGATTCGTACGTAGGCACT - 5' Q: Based on written convention, i.e. the 3'-5' orientation, is this the coding strand or the template strand? ______________________________ Q: Assuming this strand extends from base #1 to #61 (going left to right), interpret the correctly transcribed mRNA and translated polypeptide for bases 24 - 47: mRNA: ___-___-___-___-___-___-___-___-___-___-___-___-___-___-___-___-___-___-___-___-___-___-___-___- polypeptide chain: ________--________--________--________--________--________--________--________arrow_forwardBriefly discuss the pros and cons of having a nucleoid (as bacteria do) versus a double nuclear membrane surrounding the DNA (as in eukaryotes). List and explain three reasons why DNA replication is very accurate.arrow_forward
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