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 7, Problem 14P
Bacterial DNA polymerase I and DNA polymerase III per-form different functions during
a. Identify the principal functions of each molecule.
b. If mutation inactivated DNA polymerase I in a strain of E. coli, would the cell be able to replicate its DNA? If so, what kind of abnormalities would you expect to find in the cell?
c. If a strain of E. coli acquired a mutation that inactivated DNA polymerase III function, would the cell be able to replicate its DNA? Why or why not?
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Chapter 7 Solutions
Genetic Analysis: An Integrated Approach (2nd Edition)
Ch. 7 - What results from the experiments of Frederick...Ch. 7 - 7.2 Explain why Avery, MacLeod, and McCarty’s in...Ch. 7 - 7.3 Hershey and Chase selected the bacteriophage...Ch. 7 - 7.4 Explain how the Hershey and Chase experiment...Ch. 7 - 7.5 One strand of a fragment of duplex DNA has the...Ch. 7 - 7.6 The principles of complementary base pairing...Ch. 7 - For the following fragment of DNA, determine the...Ch. 7 - 7.8 Figures present simplified depictions of...Ch. 7 - 7.9 Consider the sequence -ACGCTACGTC-.
What is...Ch. 7 - DNA polymerase III is the main DNA-synthesizing...
Ch. 7 - Explain how RNA participates in DNA replication.Ch. 7 - A sample of double-stranded DNA is found to...Ch. 7 - Bacterial DNA polymerase I and DNA polymerase III...Ch. 7 - Diagram a replication fork in bacterial DNA and...Ch. 7 - Prob. 16PCh. 7 - Which of the following equalities is not true for...Ch. 7 - List the order in which the following proteins and...Ch. 7 - Two viral genomes are sequenced, and the following...Ch. 7 - Matthew Meselson and Franklin Stahl demonstrated...Ch. 7 - Raymond Rodriguez and colleagues demonstrated...Ch. 7 - 7.22 Joel Huberman and Arthur Riggs used pulse...Ch. 7 - 7.23 Why do the genomes of eukaryotes, such as...Ch. 7 - Bloom syndrome (OMIM 210900) is an autosomal...Ch. 7 - 7.25 How does rolling circle replication (see...Ch. 7 - Telomeres are found at the ends of eukaryotic...Ch. 7 - A family consisting of a mother (I-1), a father...Ch. 7 - In a dideoxy DNA sequencing experiment, four...Ch. 7 - Prob. 29PCh. 7 - Using an illustration style and labeling similar...Ch. 7 - A PCR reaction begins with one double-stranded...Ch. 7 - Prob. 32PCh. 7 - Three independently assorting VNTR markers are...Ch. 7 - 7.34 A sufficient amount of a small DNA fragment...Ch. 7 - Prob. 35P
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- Below is a study of a colony of cells, determine that some of these cells have a mutated DNA polymerase I that results in loss of function of this enzyme. - What will the effect of the mutation in DNA polymerase I be on DNA replication? Include leading and lagging strand - Will this mutation in DNA polymerase I have an impact on another step in DNA replication? Will DNA be replicatation be impacted? Are any enzymes involved?arrow_forwardConsider the following sequence of DNA: 3'-TTA CGG-5'What dipeptide is formed from this DNA after transcription and translation? b. If a mutation converts CGG to CGT in DNA, what dipeptide is formed? c. If a mutation converts CGG to CCG in DNA, what dipeptide is formed? d. If a mutation converts CGG to AGG in DNA, what dipeptide is formed?arrow_forwarda. As a result of the structure of DNA and RNA, replication, transcription and translation are possible. What can nucleic acids do, as a result of their structure, that enables these processes to occur? The figure below shows a simplified schematic representation of a segment of DNA. The DNA is labelled with the numbers 1 – 14 for easy reference. -35 sequence Pribnow box 5' UTR 3' UTR DNA TTGACA TATAAT -35 -10 Gene a Gene B Gene y 1 2 3 4 5 6 7 8 9 10 11 12 13 14 UTR = untranslated region b. At which position on the DNA (number 1 - 14) will transcription be initiated? c. At which position on the DNA (number 1 - 14) will the first signal for translation be found? d. Between which two regions on the DNA will the polyadenylation signal be found? Use the numbers to indicate the region. e. Between which two regions on the DNA will the first Shine-Dalgarno / Ribosome Binding Sequence be found? Use the numbers to indicate the region.arrow_forward
- B. One strand of a section of DNA isolated from E. coli reads: (Assume no start codon is required as is true under certain test tube conditions). 5' GTAGCCTACCCATAGG 3' What is the complementary DNA strand? 2. Suppose mRNA is transcribed from this DNA using the complementary strand as a template. What will be the sequence of the mRNA? 3. What would be the corresponding anticodons? 4. What peptide would be made if translation started exactly at the 5' end of this mRNA?arrow_forwardPlease consider figures 1 and 2 below. 5' A B 5' -I H. D. Figure 1: Replication Figure 2: Transcription a. Which letters, A to J represent DNA strands that will be synthesized continuously? b. At which letter, A to J, are ribonucleotides being added? c. Name and describe the process that occurs in prokaryotes as the synthesized mRNA hangs free of the double helix while transcription continues. d. In what direction will the replication bubble move in figure 1 as replication continues? Rleace Ibol ancwors (a) to (d)arrow_forward(b): How many forms can naturally occurring DNA exist in? Explain how these forms are characterized. What properties of the functional groups determine the binding of DNA with anti-cancer agents? Explain.arrow_forward
- The experiment below is from a seminal set of experiments in the 1960s that illustrated the role of various repair pathways for DNA damage caused by UV radiation. In this experiment, the scientists isolated E coli strains that are mutant in the Rec A gene, the UvrA gene or both. They then irradiated cultures of each strain with increasing doses of UV light and measured the effect on cell viability. Answer the following questions about this data. A. Which DNA repair pathway and repair activity is inhibited by the Rec A mutant? B. Which DNA repair pathway and repair function is inhibited by UvrA mutant? C. Why is the UvrA/RecA double mutant so much more senitive to UV light than either mutant alone?arrow_forwardGenerate a concept map that includes all the specifics below: Classification based on: 1. their effect on the DNA 2. on their phenotypic effect. Kinds of DNA damage and lesions (spontaneous and induced) produced by specific exposures. (Note: don't forget transposons and CRISPR Cas9) Specific repair mechanisms that fix each kind of DNA damage or lesion (during/post replication). Include information about the number of replication cycles for a dominant mutation to cause a phenotype. And the number of cycles for a recessive mutation to possibly cause a phenotype.arrow_forward1 2 3arrow_forward
- A mutant DNA strand was transcribed then translated to proteins. a. What is the protein product of the mutant DNA strand? The sequence of the mutant strand is shown below: 5'-TGCCATAACTGTTCGTACTGGCAAATTGCC-3' 3'-ACGGTATTGACAAGCATGACCGTTTAACGG-5' b. The mutation altered the sequence of the wild type template DNA such that a degenerate codon for a basic amino acid in the wild type was converted to a non-degenerate codon resulting in the sequence for the mutant strand shown. What was the original amino acid? c. Compare the charges and pl of the mutant peptide and the normal (wild- type) peptide at physiological pH?arrow_forwarda. What DNA sequences are found at the telomeresof human chromosomes?b. What functions do the two telomere-associatedcomplexes, telomerase and shelterin, fulfill at chromosome ends?c. Where do you think that the RNA component oftelomerase comes from?arrow_forwardQ: Hyperglycosylated genetically engineered proteins synthesized by some micro-organisms are usually induce human immune system O True a O False .b Q: Find the incorrect statement about plasmids CO they are circular a they replicate independently .b they are transferrable .c they are single stranded .d Q: Discontinuities of DNA nick can be fixed by ........... activity Nuclease .a Modifying enzymes .b O Ligase .c O Polymerisation d Q: Frameshifts means missreading of right sequence of a inserted genes presence of mutation that disturb the b sequence order a process that leads to generate .c different protein sequence All choice .d none of choices.e Q: Despite some drawbacks, E. Coli remains the most frequently used microbial eukaryote for recombinant protein synthesis O True .a O False .b Q: Even when the recombinant proteins are produced in mammalian cells, there are still some drawbacks can be occurred such as Protein folding a The yield of recombinant protein b Recombinant Protein…arrow_forward
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