Lysogenic Cycle Virus Examples

Lysogeny or the lysogenic cycle is one of two cycles of viral reproduction the lytic cycle being the other. A bacteriophage or bacteria virus injects its dna into the bacteria.

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Lysogeny is characterized by integration of the bacteriophage nucleic acid into the host bacterium s genome or formation of a circular replicon in the bacterial cytoplasm.

Lysogenic cycle virus examples. Lysogenic cycle or lysogeny is one of the two alternative life cycles of a virus inside a host cell whereby the virus that has infected a cell attaches itself to the host dna and acting like an inert segment of the dna replicates when the host cell divides. Lambda λ phage infecting the bacterium e coli. While the lysogenic cycle can sometimes happen in eukaryotes prokaryotes or bacteria are much better understood examples.

An example of a bacteriophage known to follow the lysogenic cycle and the lytic cycle is the phage lambda of e. In this condition the bacterium continues to live and reproduce normally. In the lysogenic cycle the virus dna rna is incorporated combined into the host s dna.

This method of replication is contrasted with the lytic cycle whereby the virus that has entered a cell takes over the cell s. Some viruses can sleep inside the genetic instructions of the host cells for years before reproducing. No matter what in both cycles the host cell ends up.

The viruses that go through lysogenic cycles are. In the lytic cycle the dna is multiplied many times and proteins are formed using processes stolen from the bacteria. Any virus injects its dna into a host s cell.

For example a person infected with hiv can live without showing symptoms of aids for years but he or she can still spread the virus to others. Latency period viruses that infect plant or animal cells may also undergo infections where they are not producing virions for long periods.

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