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 2COMQ
During the molecular process of homologous recombination between homologous chromosomes,
a. a Holliday junction forms.
b. branch migration occurs.
c. a heteroduplex region forms.
d. all of the above occur.
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Students have asked these similar questions
Which of the following situations does not describes a chromosomal mutation?
Select one:
a. A cytosine nucleotide is substituted for thymine nucleotide in a gene.
b. A portion of Chromosome 4 is deleted during interphase of meiosis.
c. The sister chromatids of Chromosome 18 do not separate during anaphase II.
d. A section of Chromosome 17 is duplicated leading to problems in the peripheral nervous system.
Errors in crossing-over can happen when...
Select one:
a.
Non-homologous chromosomes cross-over and recombine.
b.
Homologous chromosomes form chiasmata at the wrong (non-homologous) locations.
c.
Chromosome breakage during crossing-over results in a chromosome fragment getting added to a different (incorrect) chromosome.
d.
All of the above
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 number
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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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
- For each statement below indicate whether it is true or false. A. Introns are transcribed regions that are not removed in RNA processing. B. In paracentric inversions, centromeres are contained within inverted chromosome segments. C. A base substitution that results in an A being switched to a T would be referred to as a transition.arrow_forwardCan chromosome duplications cause negative effects to an organism? Why or why not? A. No. Duplicated regions of chromosomes are quickly lost by looping out during meiosis. B. Yes. Duplicated regions increase gene dosage, which affects processes like development that require specific amounts of protein. C. No. Cells with duplications function even more efficiently than those without duplications. D. No. Duplicated regions of chromosomes cannot affect gene dosage because the cell can always compensate for extra copies of genes. E. Yes. Duplicated regions require DNA to be replicated, which delays the cell cycle and wastes energy.arrow_forwardWhich of the following statements about chromosomes and centromeres is INCORRECT?(choose the letter that corresponds to the answer) A. A centromere is a constriction visible on metaphase chromosomes. B. Centromere position is a useful marker for dividing chromosomes into karyotype groups. C. Centromeric protein-A replaces histone H3 in nucleosomes found at the centromere. D. Acentric and dicentric chromosomes are genetically stable chromosomes.arrow_forward
- How is homologous recombination for DNA repair different from recombination in meiosis? Choose all correct answers. a. HR in DNA repair requires a double-strand break, but meiotic recombination does not. b. HR in DNA repair requires strand invasion, but meiotic recombination does not. c. HR in DNA repair results in identical chromosomes. Meiotic recombination results in changes to the DNA sequence of the "repaired" chromosomes. d. HR in DNA repair uses a newly synthesized identical chromosome as a template. Meiotic recombination uses a homologous chromosome as a template.arrow_forwardMetacentric chromosomes have a centromere located: A. near the middle of the chromosome (chromosome has two arms of approx. equal length) B. towards one end (chromosome has one long arm and one short arm) C. near one end of the chromosome (chromosome has one long arm and a knob at the other end)arrow_forwardA chromosome that has spindle fibers attached to a specific chromosomal region… a. has a localized centromere b. is very rare c. has a holocentric centromere d. has reduced histone content e. has a dispersed centromerearrow_forward
- In the experiment of cell fusion, when tumor cells were fused with normal cells, the initially formed tetraploid cells (or subsequently arising sub-tetraploid cells) were discovered to have lost the ability to form tumors. What is the explanation for this observation?arrow_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_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
- A mechanism that may cause a translocation isa. the joining of reactive ends when two different chromosomesbreak.b. crossing over between nonhomologous chromosomes.c. crossing over between homologous chromosomes.d. either a or b.arrow_forwardIn which of the following is genetic material moved betweennonhomologous chromosomes?a. insertion d. translocationb. nondisjunction e. inversionc. deletionarrow_forwardChiasmatic interference is caused by: A. An artifact caused by the Chi square distribution. B. Genes physically being distant but on the same chromosome. C. Some genes are naturally more charismatic than others. D. Epistasis combined with suppression. E. The size of the synaptonemal complexarrow_forward
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genetic recombination strategies of bacteria CONJUGATION, TRANSDUCTION AND TRANSFORMATION; Author: Scientist Cindy;https://www.youtube.com/watch?v=_Va8FZJEl9A;License: Standard youtube license