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Micro Lab Quiz - Bacterial Conjugation
Chapter 21 - Bacterial Conjugation
Terms in this set (14)
Downside of binary fission in bacteria
no genetic variation
Three methods of genetic transfer in bacteria
2. conjugation (mating)
Rearrangement of genetic material - donor DNA is integrated in recipient chromosome
F - plus F+ => F+ and F+
Genetic transfer between two bacterium by direct contact or by Sex Pilus.
An F+ bacterium encounters F- bacterium. The Factor Plasmid copies itself into the F- bacterium.
New genes from F plasmid can give recipient the phenotype
What does F+ refer to?
Bacteria has an Factor Plasmid separate from the chromosome
Bacteria just has normal bacterial chromosome, no F plasmid
Hfr Bacterium - High Frequency Recombinant
Bacterium donates its genes with high frequency during conjugation by integrating F factor into chromosome
Chromosome and F-plasmid become one
Hfr plus F - ==> Hfr and F- (F- still has new genes though)
circular double stranded DNA molecules that can replicated independently from chromosome
Microorganism that needs same nutrients as the majority of its species
Lacks ability to make one or more essential growth factors
occurs when prototroph mutates
Picture of Transformation, Transduction, Conjugation
uptake of foreign DNA from environment (usually released from dead bacteria) and incorporated into chromosome of cell
Bacteriophages inject their viral DNA -> incorporates viral DNA into host DNA so its copied and passed on
Sets with similar terms
Microbiology: Chapter 8
Genetics Chapter 6
Lateral Gene Transfer
Chapter 9: Genetics of Bacteria
Sets found in the same folder
Microbiology Exam 1 (Chapters 1, 3-5)
Lab 11 - Bacterial Conjugation
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