Genetics: Analysis and Principles
6th Edition
ISBN: 9781259616020
Author: Robert J. Brooker Professor Dr.
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 10.5, Problem 1COMQ
What are the components of a single nucleosome?
a. About 146 bp of DNA and four histone proteins
b. About 146 bp of DNA and eight histone proteins
c. About 200 bp of DNA and four histone proteins
d. About 200 bp of DNA and eight histone proteins
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What are the components of a single nucleosome?a. About 146 bp of DNA and four histone proteinsb. About 146 bp of DNA and eight histone proteinsc. About 200 bp of DNA and four histone proteinsd. About 200 bp of DNA and eight histone proteins
What is a nucleosome?
a. A region in the cell’s nucleus that contains euchromatin
b. A region of DNA wound around histone proteins
c. A region of a chromosome made up of multiple loops of chromatin
d. A 30-nm fiber found in chromatin
How many copies of the H2B histone would be found in chromatin containing 50 nucleosomes?
a. 5
b. 10
c. 50
d. 100
Chapter 10 Solutions
Genetics: Analysis and Principles
Ch. 10.1 - 1. A bacterial chromosome typically contains
a. a...Ch. 10.2 - Mechanisms that make the bacterial chromosome more...Ch. 10.2 - 2. Negative supercoiling may enhance activities...Ch. 10.2 - 3. DNA gyrase
a. promotes negative supercoiling....Ch. 10.3 - 1. The chromosomes of eukaryotes typically contain...Ch. 10.4 - Which of the following is an example of a...Ch. 10.5 - What are the components of a single nucleosome? a....Ch. 10.5 - 2. In Noll’s experiment to test the...Ch. 10.5 - Prob. 3COMQCh. 10.5 - Prob. 4COMQ
Ch. 10.6 - Prob. 1COMQCh. 10.6 - 2. The role of cohesin is to
a. make chromosomes...Ch. 10 - Prob. 1CONQCh. 10 - Prob. 2CONQCh. 10 - 3. Describe the mechanisms by which bacterial DNA...Ch. 10 - Why is DNA supercoiling called supercoiling rather...Ch. 10 - Prob. 5CONQCh. 10 - Prob. 6CONQCh. 10 - Prob. 7CONQCh. 10 - Prob. 8CONQCh. 10 - Prob. 9CONQCh. 10 - 10. What is the function of a centromere? At what...Ch. 10 - Prob. 11CONQCh. 10 - 12. Describe the structures of a nucleosome and a...Ch. 10 - Beginning with the G1 phase of the cell cycle,...Ch. 10 - Draw a picture depicting the binding between the...Ch. 10 - 15. Compare heterochromatin and euchromatin. What...Ch. 10 - 16. Compare the structure and cell localization of...Ch. 10 - 17. What types of genetic activities occur during...Ch. 10 - Lets assume the linker region of DNA averages 54bp...Ch. 10 - 19. In Figure 10.12, what are we looking at in...Ch. 10 - 20. What are the roles of the core histone...Ch. 10 - A typical eukaryotic chromosome found in humans...Ch. 10 - Which of the following terms should not be used to...Ch. 10 - Discuss the differences between the compaction...Ch. 10 - 24. What is an SMC complex? Describe two...Ch. 10 - Two circular DNA molecules, which we can call...Ch. 10 - 2. Let’s suppose you have isolated DNA from a cell...Ch. 10 - 3. We seem to know more about the structure of...Ch. 10 - In Nolls experiment of Figure 10.11, explain where...Ch. 10 - When chromatin is treated with a salt solution of...Ch. 10 - 6. Let’s suppose you have isolated chromatin from...Ch. 10 - If you were given a sample of chromosomal DNA and...Ch. 10 - Consider how histone proteins bind to DNA and then...Ch. 10 - In Chapter 23, the technique of fluorescence in...Ch. 10 - Bacterial and eukaryotic chromosomes are very...Ch. 10 - The prevalence of highly repetitive sequences...Ch. 10 - Discuss and make a list of the similarities and...
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- In eukaryotic cells, the nucleosomal core contains which arrangement of histone proteins? A. two H1, one H2A, one H2B, two H3, and two H4 histone proteins B. two H2B, two H2A, two H3, and two H1 histone proteins C. two H3, two H1, two H2A, and two H2B histone proteins D. two H4, two H3, two H2B, and two H2A histone proteins E. two H2A, two H3, two H4, and two H1 histone proteinsarrow_forwardA diploid plant cell contains 2 billion base pairs of DNA. a. How many nucleosomes are present in the cell? b. Give the number of molecules of each type of histone protein associated with the genomic DNA.arrow_forwardWhat is a chromosome? A. A type of protein that associates with eukaryotic DNA and structurally organizes chromosomes B. The two attached DNA molecules of a duplicated eukaryotic chromosome C. A structure that consists of tightly bundled DNA together with associated proteins D. A constricted region where sister chromatids attach to each other in a duplicated eukaryotic chromosomearrow_forward
- Using the figure below identify: What is the role of histones and nucleosomes? How the process of chromatin condensation is performed? What is a function of introns and exons? What is a role of mobile DNA elements? What is a meaning of simple-sequence DNA?arrow_forwardContrast euchromatin and heterochromatin. Then explain how DNA can transition from one to the other. Use the terms histone, nucleosome, and acetylation.arrow_forwardDescribe the appearance and composition of chromatin and the structure of nucleosomes. Comment on the significance of histone proteins.arrow_forward
- Of the following statements related to the function of telomeres, identify which is FALSE. a. Telomeres protect organisms from cancer by limiting the number of somatic cell divisions b. Telomeres help prevent unnecessary cell death by preventing DNA monitoring activity at the staggered ends of DNA c. Telomeres restore the length of lagging DNA strands in germ cells d. Telomeres offer some protection against the unavoidable shortening of genesarrow_forwardCertain organisms contain cells that possess polytene chromosomes. What are polytene chromosomes, where are they found, and what function do they serve?arrow_forwardDraw a nucleosome, indicating the positions of DNA andproteins.arrow_forward
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