Genetics: From Genes to Genomes
6th Edition
ISBN: 9781259700903
Author: Leland Hartwell Dr., Michael L. Goldberg Professor Dr., Janice Fischer, Leroy Hood Dr.
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 10, Problem 12P
Give two different reasons for the much higher ratio of total DNA to protein-encoding DNA in the human genome as compared to bacterial genomes.
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Chapter 10 Solutions
Genetics: From Genes to Genomes
Ch. 10 - Prob. 1PCh. 10 - List three independent techniques you could use to...Ch. 10 - Figure 10.2a has numbers indicating the...Ch. 10 - Which of the enzymes from the following list would...Ch. 10 - Prob. 5PCh. 10 - a. What sequence information about a gene is...Ch. 10 - Why do geneticists studying eukaryotic organisms...Ch. 10 - Consider three different kinds of human libraries:...Ch. 10 - The human genome has been sequenced, but we still...Ch. 10 - This problem investigates issues encountered in...
Ch. 10 - For the sake of simplicity, Fig. 10.4 omitted one...Ch. 10 - Give two different reasons for the much higher...Ch. 10 - Using a cDNA library, you isolated two different...Ch. 10 - The figure that follows shows part of a modified...Ch. 10 - In Problem 14, cDNAs F and G could not be found in...Ch. 10 - Fig. 10.10 presents a model for exon shuffling in...Ch. 10 - An interesting phenomenon found in vertebrate DNA...Ch. 10 - a. If you found a zinc-finger domain which...Ch. 10 - Prob. 19PCh. 10 - In the human immune system, so-called B cells can...Ch. 10 - Chimpanzees have a set of hemoglobin genes very...Ch. 10 - Complete genome sequences indicate that the human...Ch. 10 - On your computers browser, view the page accessed...Ch. 10 - Prob. 24PCh. 10 - Prob. 25PCh. 10 - Certain individuals with mild forms of...Ch. 10 - The 1 and 2 genes in humans are identical in their...Ch. 10 - Prob. 28P
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- On the basis of current knowledge, the protein-encoding regions account for only about 3% of the human genome. What is the function of the rest of the DNA?arrow_forwardApproximately what portion of the human genome is composed of repeat sequences?arrow_forwardWould you be more likely to find single nucleotidepolymorphisms (SNPs) in the protein-coding or in thenoncoding DNA of the human genome?arrow_forward
- What proportion of exons are repeated sequences in the human genome? Is 38% surprising?arrow_forwardBacteriophage T4 has a linear double-stranded DNA genome, yet mapping many mutations, as shown in Figure, generates a circular linkage map. How might you explain this discrepancy?arrow_forwardGiven the Percentage Composition of One Nucleotide ina Genome, Can We Predict the Percentages of the OtherThree Nucleotides?arrow_forward
- Although DNA transposons are abundant in the genomes of multicellular eukaryotes, class 1 elements usually make up the largest fraction of very large genomes such as those from humans (~2500 Mb), maize (~2500 Mb), and barley (~5000 Mb). Given what you know about class 1 and class 2 elements, what is it about their distinct mechanisms of transposition that would account for this consistent difference in abundance?arrow_forwardExplain the reason that recombination between similar, but not nonidentical sequences pose a problem for human cells.arrow_forwardAssuming human cells have on average 1000 mitochondria, what percentage by weight of the total DNAisolated from human tissue would be mtDNA?arrow_forward
- If you compare the frequency of the sixteen possible dinucleotide sequences in the E. coli and human genomes, there are no striking differences except for one dinucleotide, 5ʹ-CG-3ʹ. The frequency of CG dinucleotides in the human genome is significantly lower than in E. coli and significantly lower than expected by chance. Why do you suppose that CG dinucleotides are underrepresented in the human genome? (hint: The C in the CG pair is often methylated). Explain how this observation has an impact on the cells immune response.arrow_forwardThe E. coli genome contains 1009 Chi sequences. Do these sequences occur at random, and, if not, how much more or less frequently than random do they occur?arrow_forwardSee the attachment and answer the following parts of the question: A) If the binturong genome is 2.87 x 109 base pairs, and the "highly repetitive DNA" fraction is composed entirely of copies of sequence 5'ATGGTCC3' and its complement, how many copies of this sequence are present in the binturong genome? B) Briefly explain, in your own words, why the fraction of the binturong DNA fragments that reannealed relatively slowly took so much longer to renature than the other DNA fragments. C) If you took more of the same randomly generated 1000 bp fragments of binturong DNA (the same sample that you used in the equilibrium density gradient centrifugation experiment described in part a and the C0t curve described in part b of this question) and used them as a sample in agarose gel electrophoresis, how many bands would you expect to find in the gel when you turned off the current and stained the gel with ethidium bromide? Briefly explain why you would predict that number of bands.arrow_forward
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