Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
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Chapter 12.6, Problem 1R
Summary Introduction
To review:
Genetic significance of recombination and mating in bacteria.
Introduction:
Bacteria lack the ability to undergo reproduction. They multiply simply by binary fission. Indeed, this would result in the bacterial genome to be same. Without meiosis, no genetic diversity is expected but these bacterial genomes undergo mating by the virtue of conjugation. Eventually, their genetic material can recombine with the foreign deoxyribonucleic acid (DNA) taken from outside.
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- Compare and contrast conjugation, transduction, and transformation. Which processes, if any, involve homologous recombination and which, if any, do not?arrow_forwardExplain why retroviral integration systems are better than the bacterial recombination system.arrow_forwardDescribe the structure of a nucleosome, the basic unit ofDNA packing in eukaryotic cells.arrow_forward
- With 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_forwardMake a list of the similarities and differences among homologous recombination, site-specific recombination, and transposition.arrow_forwardExplain the V(D)J recombination of multiple gene elements.arrow_forward
- When the interrupted mating technique was used withfive different strains of Hfr bacteria, the following orders ofgene entry and recombination were observed. On the basisof these data, draw a map of the bacterial chromosome.Do the data support the concept of circularity?HfrStrain Order1 T C H R O2 H R O M B3 M O R H C4 M B A K T5 C T K A Barrow_forwardasap please A partially filled diagram of eukaryotic gene structure is shown below. Label the following additional elements in the empty boxes. One label must be used twice: a) 3'UTR, b) 5'UTR, c) exon, d) intron, e) promoterarrow_forwardWhich of the following is true of transposons? A) SINES are DNA-only transposons B) LINES are non-autonomous transposons Oa break induced repair is the mechanism by which this form of recombination C) occurs O D) recombinases form phosphotyrosine intermediates during transposition E) spo11 initiates the double-strand break to initiate transpostionarrow_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