Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 17.1, Problem 2SB
Summary Introduction
To review:
The distinction between horizontal gene transfer in bacteria and gene segregation in sexually reproducing organisms.
Introduction:
Horizontal gene transfer (HGT) involves three processes, namely, transformation, transduction, and conjugation. In all these, foreign DNA (deoxyribonucleic acid) is transferred to bacteria. In sexually reproducing organisms, gene segregation occurs during gamete formation, which takes place by meiosis.
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Students have asked these similar questions
Why do you suppose that horizontal gene transfer is more prevalent in single-celled organisms than in multicellular organisms?
How does recombination in bacteria differ from recombination in eukaryotes?
1) Recombination does not occur in prokaryotes
2) Only the plasmid DNA goes through recombination in prokaryotes
3) Sister chromatids, not homologous chromosomes, exchange information during recombination in prokaryotes
4) A portion of DNA from genome is replaced with homologous DNA from another strain of bacteria.
In eukaryotes, sexual reproduction is the main process by which new gene combinations are generated. How do bacteria generate new gene combinations in the absence of sexual reproduction?
Chapter 17 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 17.1 - What are the properties of F+, F-, and Hfr cells...Ch. 17.1 - Prob. 2SBCh. 17.2 - Prob. 1SBCh. 17.2 - How does viral infection of an animal cell and a...Ch. 17.2 - Prob. 3SBCh. 17.3 - Prob. 1SBCh. 17 - Prob. 1TYKCh. 17 - Prob. 2TYKCh. 17 - Which of the following is not correct for...Ch. 17 - Prob. 4TYK
Ch. 17 - Prob. 5TYKCh. 17 - Prob. 6TYKCh. 17 - When a virus enters the lysogenic stage: a. the...Ch. 17 - An infectious material is isolated from a nerve...Ch. 17 - Prob. 9TYKCh. 17 - Prob. 10TYKCh. 17 - Prob. 11TYKCh. 17 - Discuss Concepts As a control for their...Ch. 17 - Prob. 13TYKCh. 17 - Prob. 14TYKCh. 17 - Prob. 15TYKCh. 17 - Prob. 1ITD
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- Why can transfer of DNA by conjugation cross genus lines, whereas transfer of DNA by natural transformation or phage transduction is usually limited to a few closely related organisms?arrow_forwardWhat are the mechanisms by which prokaryotes exchange genetic material via horizontal gene transfer? Describe the three processes.arrow_forwardWith respect to F+ and F- bacterial matings, answer the following questions: (a) How was it established that physical contact between cells was necessary? (b) How was it established that chromosome transfer was unidirectional? (c) What is the genetic basis for a bacterium’s being F+?arrow_forward
- With respect to F+ and F- bacterial matings, (a) How was it established that physical contact was necessary? (b) How was it established that chromosome transfer was unidirectional? (c) What is the genetic basis of a bacterium being F+?arrow_forwardwhy Genes Are Tightly Packed in BacterialGenomes?arrow_forwardFor the following sets of partial diploid bacteria, is the Z gene constitutive, inducible, or non-inducible?arrow_forward
- Describe the four phases of bacterial cell division. Where would horizontal gene transfer occur? Where would sporogenesis occur? If antibiotics generally target cells which are growing and dividing as fast as they can, when would antibiotics be most effective? If a culture had 4 cells to begin with and has a generation time of 60 minutes, how long would it take to get 1,048,576 cells?arrow_forwardWhat is the term used to describe the genome of a bacterial cell that has been infected by a phage utilizing lysogeny? O 1) nucleocapsid O 2) prophpage O 3) provirus O 4) lysogenome O 5) chromatidarrow_forwardWhat would be the evolutionary advantage of having a period of natural “competence” in a bacterial life cycle? What would be possible disadvantages?arrow_forward
- What is lateral gene trasfer? How might it take place between two bacterial cells?arrow_forwardWhy are conjugation and sporulation not considered as forms of reproduction in prokaryotic cells, and what are the main purposes of these processes?arrow_forwardDefine, diagram & compare the 3 mechanisms of Horizontal Gene Transfer in prokaryotes. In each case, what must happen for the exchanged DNA to be stably inherited?arrow_forward
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