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 8.1, Problem 2COMQ
Staining eukaryotic chromosomes is useful because it makes it possible to
a. distinguish chromosomes that are similar in size and centromeric locations.
b. identify changes in chromosome structure.
c. explore evolutionary relationships among different species.
d. do all of the above.
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When preparing a karyotype, which of the following steps isconducted?a. Treat the cells with a drug that causes them to begin celldivision.b. Treat the cells with a hypotonic solution that causes them toswell.c. Expose the cells to chemical dyes that bind to the chromosomes and stain them.d. All of the above
When preparing a karyotype, which of the following steps is conducted?a. Treat the cells with a chemical that causes them to begin cell division.b. Treat the cells with a hypotonic solution that causes them to swell.c. Expose the cells to chemical dyes that bind to the chromosomesand stain them.d. All of the above steps are carried out.
a. In order to help you visualize the processes, begin by drawing the 4 pictures from question “2" at
the appropriate spot by the arrows along the top.
b. Using a thin line, graph the relative amount of DNA per nucleus using the LEFT Y axis (G1, S and
G2 are graphed for you).
c. Using a thick line or different color and the scale on the RIGHT Y axis, graph the changes in Ploidy
or sets of information per nucleus. Haploid (1n) means one of each chromosome type. Diploid (2n)
means two of each chromosome type.
4x
1n
G1 s'G2 P' M'A'T'cG1' s'G2 P' M' A'T
C
M' A T' C Fert
Mitosis
Meiosis IMeiosis II
Relative amount of
DNA per nucleus
Ploidy per nucleus
Chapter 8 Solutions
Genetics: Analysis and Principles
Ch. 8.1 - 1. A chromosome that is metacentric has its...Ch. 8.1 - Staining eukaryotic chromosomes is useful because...Ch. 8.2 - Prob. 1COMQCh. 8.3 - Which of the following statements is correct? a....Ch. 8.3 - Prob. 2COMQCh. 8.4 - 1. A paracentric inversion
a. includes the...Ch. 8.4 - Due to crossing over within an inversion loop, a...Ch. 8.4 - 3. A mechanism that may cause a translocation is...Ch. 8.5 - 1. Humans have 23 chromosomes per set. A person...Ch. 8.6 - Prob. 1COMQ
Ch. 8.6 - Prob. 2COMQCh. 8.7 - The term endopolyploidy refers to the phenomenon...Ch. 8.7 - 2. In agriculture, an advantage of triploidy in...Ch. 8.8 - Prob. 1COMQCh. 8.8 - The somatic cells of an allotetraploid contain a....Ch. 8 - 1. Which changes in chromosome structure cause a...Ch. 8 - Prob. 2CONQCh. 8 - 3. How does a chromosomal duplication occur?
Ch. 8 - 4. What is a gene family? How are gene families...Ch. 8 - Prob. 5CONQCh. 8 - Two chromosomes have the following orders for...Ch. 8 - An inversion heterozygote has the following...Ch. 8 - Prob. 8CONQCh. 8 - Explain why inversions and reciprocal...Ch. 8 - 10. An individual has the following reciprocal...Ch. 8 - A phenotypically normal individual has the...Ch. 8 - 12. Two phenotypically normal parents produce a...Ch. 8 - With regard to the segregation of centromeres, why...Ch. 8 - Prob. 14CONQCh. 8 - Prob. 15CONQCh. 8 - 16. A phenotypically abnormal individual has a...Ch. 8 - 17. A diploid fruit fly has eight chromosomes. How...Ch. 8 - Prob. 18CONQCh. 8 - Prob. 19CONQCh. 8 - 20. Aneuploidy is typically detrimental, whereas...Ch. 8 - 21. Explain how aneuploidy, deletions, and...Ch. 8 - Prob. 22CONQCh. 8 - 23. A cytogeneticist has collected tissue samples...Ch. 8 - Prob. 24CONQCh. 8 - A zookeeper has collected a male and a female...Ch. 8 - Prob. 26CONQCh. 8 - 27. What is mosaicism? How is it produced?
Ch. 8 - 28. Explain how polytene chromosomes of Drosophila...Ch. 8 - 29. Describe some of the advantages of polyploid...Ch. 8 - 30. While conducting field studies on a chain of...Ch. 8 - Prob. 31CONQCh. 8 - Which of the following terms should not be used to...Ch. 8 - Prob. 33CONQCh. 8 - Prob. 34CONQCh. 8 - A triploid plant has 18 chromosomes (i.e., 6...Ch. 8 - Prob. 36CONQCh. 8 - Prob. 37CONQCh. 8 - 38. A woman who is heterozygous, Bb, has brown...Ch. 8 - 39. What is an allodiploid? What factor determines...Ch. 8 - Prob. 40CONQCh. 8 - 41. Table 8.1 shows that Turner syndrome occurs...Ch. 8 - 42. Male honeybees, which are haploid, produce...Ch. 8 - Prob. 1EQCh. 8 - Prob. 2EQCh. 8 - With regard to the analysis of chromosome...Ch. 8 - 4. Describe how colchicine can be used to alter...Ch. 8 - 5. Describe the steps you would take to produce a...Ch. 8 - Prob. 6EQCh. 8 - What are G bands? Discuss how G bands are useful...Ch. 8 - A female fruit fly has one normal X chromosome and...Ch. 8 - Prob. 2QSDCCh. 8 - Besides the ones mentioned in this textbook, look...Ch. 8 - Prob. 4QSDCCh. 8 - 5. Discuss the importance of gene families at the...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Which of the following statements is true? a. Linear chromosome structures observed in a karyotype are actually pairs of sister chromatids. b. Prokaryotic and eukaryotic cells divide through binary fission. c. Because chromosomes of prokaryotes are smaller than eukaryotic chromosomes, prokaryotic nuclei are also smaller. d. The genetic information found in a eukaryotic chromosome makes up the cell's entire genome.arrow_forwardA molecular marker is a found at a specific siteon a chromosome that has properties that allow it to be . a. colored dye, visualized via microscopyb. colored dye, visualized on a gelc. segment of DNA, uniquely identified using molecular toolsd. segment of DNA, visualized via microscopyarrow_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
- If an organism has the following chromosome set... Which image below accurately depicts a bivalent? O a. Ob. c. O d. O e.arrow_forwardA research scientist is studying diseases associated with homologous chromosomes and notices that the same gene along the chromosome has different function what can you conclude about his findings? A. The homologous pairs have been recombined and therefore he is studying end joining of chromosomes B. He is studying sex chromosomes and the differences are because the chromosomes are from a male species organism C. He has identified different alleles among homologous chromosomes. D. He is studying basic chromosome remodeling during fertilzationarrow_forwardWhich of these items have the same exact Genetic information/ Nucleotide Sequence. a. Chromosome 1 from mom and chromosome 1 from dad. b. Homologous chromosomes c. Sister chromatids d. All of the abovearrow_forward
- The kinetochore is a structure that functions toa. connect the centromere to microtubules.b. connect centrioles to microtubules.c. aid in chromosome condensation.d. aid in chromosome cohesion.arrow_forwardYou are asked to prepare a karyotype of any species.what type of cell division you will look at to arrange chromosomes in order and how?arrow_forwardEukaryotic chromosomes a. have only histones b. have DNA and RNA c. have DNA, RNA, and protein d. have DNA, histones, and scaffold protein e. are made of RNA and proteinarrow_forward
- A medical student is studying a liver biopsy taken from a regenerating liver following a partial hepatectomy. The student sees a dividing cell in which the chromosomes are aligned on a plate. Which of the following best describes the character of the chromosomes in the plate? A. 23 chromosomes with 2N DNA total and with each chromosome having one chromatid B. 23 chromosomes with 4N DNA total and with each chromosome having two chromatids C. 46 chromosomes with 2N DNA total and with each chromosome having one chromatid D. 46 chromosomes with 4N DNA total and each chromosome having two chromatids E. 92 chromosomes with 2N DNA total and with each chromosome having two chromatidsarrow_forwardWhen recombination (“crossing over”) doesn’t happen correctly, what type(s) of mutations that can occur? Mark all that apply Select one or more: a. Deletion of part of a chromosome b. Translocation (transfer of part of a chromosome to a non-homologous chromosome) c. Duplication of part of a chromosome d.Inversion (reversal or “flipping” of part of a chromosome)arrow_forwardWhich of the following is a FALSE statement regarding human chromosomes? A. The chromosome number in humans is 2n=46. B. Gametes have half number of the chromosomes as in somatic cells. C. There are 22 pairs of autosomes and 2 sex chromosomes. D. Liver cells can be polyploids. They can have 23, 46, 69 or 92 chromosomes.arrow_forward
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