Genetics: Analysis and Principles
6th Edition
ISBN: 9781259616020
Author: Robert J. Brooker Professor Dr.
Publisher: McGraw-Hill Education
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Chapter 10.5, Problem 4COMQ
Summary Introduction
Introduction:
The network of proteins in the nucleus form a matrix known as the nuclear matrix which consists of two parts. The nuclear lamina is the inner membrane, and the nuclear matrix is made up of a fine network of proteins. This matrix helps to form the chromosome territory.
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A chromosome territory is a regiona. along a chromosome where many genes are clustered.b. along a chromosome where the nucleosomes are closetogether.c. in a cell nucleus where a single chromosome is located.d. in a cell nucleus where multiple chromosomes are located
What 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 chromosome
Which region of DNA is the site of spindle fiber attachment during mitosis and meiosis? A. the telomere
B. the operator
C. the terminator
D. the promoter E. the centromere
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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- Which of the following favors the alignment of chromosomes along the equatorial plate? a.)Centromere duplication b.)Pulling and pushing of the spindle fiber c.)The presence of centromere d.)The pair of aster at the beginning of cell divisionarrow_forwardAn unfertilized egg cell from a goldfish contains 47 chromosomes. How many chromosomes would be present in one of this goldfish's intestinal cells? a) 47 chromosomes b) 94 chromosomes c) 23 chromosomes d) 188 chromosomes e) 24 chromosomesarrow_forwardWhich types of chromosome mutations a. increase the amount of genetic material in a particular chromosome? b. increase the amount of genetic material in all chromosomes? c. decrease the amount of genetic material in a particular chromosome? d. change the position of DNA sequences in a single chromosome without changing the amount of genetic material? e. move DNA from one chromosome to a nonhomologous chromosome?arrow_forward
- In an organism’s genome, autosomes are a. the chromosomes that differ between the sexes. b. chromosomes that are involved in sex determination. c. only inherited from the mother (maternal inheritance). d. all of the chromosomes other than sex chromosomesarrow_forwardCrossing over is the process wherebya. homologous chromosomes cross over to opposite sides of the cell.b. homologous chromosomes exchange chromosomal material.c. homologous chromosomes become closely associated along their lengths.d. kinetochore fibers attach to both sides of a centromerearrow_forwardA change in chromosome structure that does not involve a change in the total amount of genetic material is?a. a deletion. b. a duplication. c. an inversion.d. none of the above.arrow_forward
- Chromosomes that carry the same genes are referred to as what?arrow_forwardWhat 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 proteinsarrow_forwardThe form of DNA that contains genes that are actively beingtranscribed is calleda. histones.b. telomeres.c. heterochromatin.d. euchromatin.arrow_forward
- The _____ is the physical location that sister chromatids are held together and where microtubules physically attach during mitosis. a. centriole b. centrosome c. centromere d. chromatinarrow_forwardWhich of the following statements is NOT true about chromatin architecture? A. The histone tails on heterochromatin are deacetylated B. Heterochromatin is heavily methylated C. Euchromatin is more likely to contain genes that are expressed at that time D. Euchromatin is heavily methylatedarrow_forwardList 8 different processes that affect the structure of the chromosomes. Explain how each process happensarrow_forward
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