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 20.1, Problem 1COMQ
Homologous recombination refers to the exchange of DNA segments that are
a. similar or identical in their DNA sequences.
b. in close proximity to one another.
c. broken due to ionizing radiation.
d. misaligned along a chromosome.
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Students have asked these similar questions
When 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)
Homologous recombination refers to the exchange of DNA segmentsthat area. similar or identical in their DNA sequences.b. in close proximity to one another.c. broken due to ionizing radiation.d. misaligned along a chromosome.
When recombination (“crossing over”) doesn’t happen correctly, what type(s) of mutations that can occur?
circle all that apply
Select one or more:
a. Inversion (reversal or “flipping” of part of a chromosome)
b. Duplication of part of a chromosome
c. Translocation (transfer of part of a chromosome to a non-homologous chromosome)
d. Deletion of part of a chromosome
Chapter 20 Solutions
Genetics: Analysis and Principles
Ch. 20.1 - 1. Homologous recombination refers to the exchange...Ch. 20.1 - During the molecular process of homologous...Ch. 20.1 - 3. A key difference between the original Holliday...Ch. 20.1 - Which of the following mechanisms can cause gene...Ch. 20.2 - 1. During site-specific recombination that occurs...Ch. 20.2 - Prob. 2COMQCh. 20.3 - Which of the following types of transposable...Ch. 20.3 - Prob. 2COMQCh. 20.3 - Prob. 3COMQCh. 20 - 1. Describe the similarities and differences...
Ch. 20 - Prob. 2CONQCh. 20 - 3. Which steps in the double-strand break model...Ch. 20 - Prob. 4CONQCh. 20 - Prob. 5CONQCh. 20 - Prob. 6CONQCh. 20 - Prob. 7CONQCh. 20 - 8. What is gene conversion?
Ch. 20 - Make a list of the differences between the...Ch. 20 - Prob. 10CONQCh. 20 - Prob. 11CONQCh. 20 - 12. According to the double-strand break model,...Ch. 20 - What type of DNA structure is recognized by RecG...Ch. 20 - Briefly describe three ways that antibody...Ch. 20 - 15. Describe the functions of the RAG1 and RAG2...Ch. 20 - According to the scenario shown in Figure 20.7,...Ch. 20 - Prob. 17CONQCh. 20 - Prob. 18CONQCh. 20 - 19. Why does transposition always produce direct...Ch. 20 - 20. Which types of TEs have the greatest potential...Ch. 20 - Prob. 21CONQCh. 20 - 22. Let’s suppose that a species of mosquito has...Ch. 20 - This chapter describes different types of TEs,...Ch. 20 - Prob. 24CONQCh. 20 - Prob. 25CONQCh. 20 - 26. What is the difference between an autonomous...Ch. 20 - 1. Briefly explain how McClintock determined that...Ch. 20 - The work of McClintock showed that the presence of...Ch. 20 - 3. In your own words, explain the term transposon...Ch. 20 - Prob. 4EQCh. 20 - 5. Gerald Rubin and Allan Spradling devised a...Ch. 20 - Make a list of the similarities and differences...Ch. 20 - Prob. 2QSDCCh. 20 - Prob. 3QSDC
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- Chromosome translocations include: A. Alterations in which the genetic material remains the same but rearranged B. Alterations in which the total amount of genetics information increases C. Alterations in which the total amount of genetics information decreases D. Variations in the chromosome numberarrow_forwardDuring the molecular process of homologous recombinationbetween homologous chromosomes,a. a Holliday junction forms.b. branch migration occurs.c. a heteroduplex region forms.d. all of the above occur.arrow_forwardAltered chromosome structure can drastically affect an individual organism’s phenotype. However, some types of chromosomal rearrangements are more likely to be harmful than others. Categorize the following types of rearrangements from MOST LIKELY to be harmful to LEAST LIKELY to be harmful. A. reciprocal translocation, deletion, translocation B. deletion, translocation, inversion C. inversion, translocation, reciprocal translocation D. translocation, inversion, duplicationarrow_forward
- Griffith's experiment demonstrated a "bacterial transformation" that A. brought heat-killed bacteria back to life. B. caused two non-virulent bacterial strains to become virulent. C. allowed a bacteriophage to inject proteins into mice. D. caused two virulent bacterial strains to become non-virulent.2. An organism that has more chromosomes than is appropriate for its species is said to be A. diploid.. triploid. C. aneuploid. D. euploid. 3. During which cellular process does the enzyme helicase play an essential role? A. DNA replication B. Amino acid synthesis C. RNA transference D. Protein synthesisarrow_forwardWhich of the following statements accurately describes DNA sequences and this subtypes? A. permissive DNA; centromeres and heterochromatin B. moderately repetitive DNA; SINEs, LINEs, and VNTRs C. dominant DNA; euchromatin and heterochromatin D. multiple gene family DNA; hemoglobin and 5.0S RNA E. composite DNA; telomeres and heterochromatinarrow_forwardA.) Homologous recombination repair are prone to error and can cause loss of genome integrity. B.) Reversal and repairing of DNA strands damage is important in maintaining genome integrity. a. Statement A is correct b. Statement B is correct c. Both A and B are correct d. Both A and B are incorrectarrow_forward
- 1. How does site specific recombination differ from homologous recombination? a. It requires a small and defined sequence similarity between two DNA segments that will recombine. b. It requires a large sequence similarity between two DNA segments that will recombine. c. It involves exonucleases that will recognize the two DNA segments that will recombine. d. It involves endonucleases that will recognize the two DNA segments that will recombine. 2. What will be the consequence if the exonuclease domain of DNA polymerase III is mutated and rendered nonfunctional? a. The polymerase can still elongate the DNA template. b. Mutations due to replication errors will increase. c. There will be no synthesis of the lagging strand d. The primers in the lagging strand will not be removed. 3. Which of the following statements best explains the mechanism for DNA replication? a. It is reductive because half the total DNA present is copied. b. It is conservative because one resulting molecule…arrow_forwardWhich of the following is not true of a single nucleotide polymorphism?a. It is usually caused by a translocation mutation.b. It is usually caused by a nucleotide substitutionmutation.c. It may change the phenotype of an organism.d. It is inherited from parent to offspring.arrow_forwardHow would the process of the double holiday junction model differ if identical DNA molecules were used in place of homologous ones? A.) Crossing over would NEVER be observed B.) No change the entire process would be the same C.) Gene conversion would never occur D.) Crossing over would ALWAYS be observed do not copy from othersarrow_forward
- Which is the largest among the followings? a. Nucleotide b. Nitrogenous base c. Phosphate d. Carbon Based on the locations of centromeres, what type describes a centromere locates slightly away from the mid-point so that the two arms are unequal? a. Telocentric b. Acrocentric c. Submetacentric d. Metacentricarrow_forwardWhich of the following is true regarding the presence of a multigene family? A. Multigene families are produced by any sort of chromosomal rearrangement. B. Multigene families are produced whenever a transposon is inserted into a gene. C. Multigene families are produced by all types of mutation, including single base substitutions. D. Multigene families are produced by some mutations that involve duplication.arrow_forwardWhich of the following is true? A. The stability of an RNA-DNA hybrid is generally tilted towards that of DNA than RNA B. RNA duplexes are more stable than DNA duplexes C. DNA duplexes are more stable than RNA duplexes D. DNA duplexes are less stable than RNA- DNA hybridarrow_forward
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