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Multiple Choice
Which of the following statements correctly describes an F' plasmid in the context of bacterial genetics?
A
An F' plasmid is a plasmid that is involved in the degradation of environmental pollutants.
B
An F' plasmid is a plasmid that only exists in eukaryotic cells.
C
An F' plasmid is a type of plasmid that cannot replicate independently of the bacterial chromosome.
D
An F' plasmid is a derivative of the F plasmid that carries additional chromosomal genes.
Verified step by step guidance
1
Understand the concept of plasmids: Plasmids are small, circular DNA molecules found in bacteria that can replicate independently of the bacterial chromosome. They often carry genes that confer advantageous traits, such as antibiotic resistance.
Learn about the F plasmid: The F plasmid, or fertility plasmid, is a specific type of plasmid that enables bacteria to transfer genetic material through a process called conjugation. It contains genes necessary for the formation of a pilus, which facilitates the transfer of DNA between bacterial cells.
Explore the F' plasmid: An F' plasmid is a variant of the F plasmid. It is formed when the F plasmid excises from the bacterial chromosome but carries with it some chromosomal genes. This results in a plasmid that not only has the original F plasmid genes but also additional chromosomal genes.
Differentiate F' plasmid from other plasmids: Unlike other plasmids that may carry genes for specific functions like antibiotic resistance or pollutant degradation, the F' plasmid is unique because it carries chromosomal genes due to improper excision from the bacterial chromosome.
Recognize the correct statement: The correct description of an F' plasmid is that it is a derivative of the F plasmid that carries additional chromosomal genes, distinguishing it from other types of plasmids that may have different functions or exist in different cellular contexts.