Biology · Kingdom Prokaryote
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Which of the following characteristics make plasmid DNA useful for researchers?
- A
Ability to incorporate cloned DNA
- B
Ability to replicate independently of chromosomal DNA
- C
Ability to be isolated from the host's genomic DNA
- D
All of the above
Plasmids are critical tools in molecular biology due to their ability to incorporate foreign DNA, replicate independently, and be easily isolated. Each characteristic plays a vital role: incorporating DNA allows for the study of specific genes; autonomous replication ensures that once introduced, the plasmid and inserted DNA are maintained across cell generations; and isolation facilitates the analysis and manipulation of the DNA. Option D is correct as it encompasses all these beneficial properties. Options A, B, and C, while true, only partially represent the usefulness of plasmids.
Plasmids can incorporate and carry foreign DNA fragments or genes. This allows researchers to create recombinant DNA molecules for study and experimentation.
Plasmids replicate autonomously from the host's chromosomal DNA, enabling the propagation of cloned DNA across generations of cells.
Plasmids can be isolated and purified from the host DNA, providing a pure sample for further genetic analysis and experimentation.
All these features make plasmid DNA invaluable in research, allowing for the introduction, replication, and isolation of DNA sequences for various genetic engineering applications.
Tagged under Biology · Kingdom Prokaryote · 2021