Lysogeny
from class: Microbiology Definition Lysogeny is a viral reproductive cycle in which the virus's genome is integrated into the host's genome, where it can remain dormant. This phase can eventually lead to the lytic cycle under certain conditions.
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Predict what's on your test 5 Must Know Facts For Your Next Test Lysogeny involves the integration of phage DNA into the bacterial chromosome, forming a prophage. A lysogenic bacterium replicates normally, passing on the prophage DNA to its offspring. Environmental stressors such as UV radiation can induce the prophage to enter the lytic cycle, leading to cell lysis. Lysogeny allows viruses to persist in host cells for long periods without causing immediate harm. Temperate phages are capable of undergoing both lysogenic and lytic cycles. Review Questions What triggers a prophage in lysogeny to enter the lytic cycle? How does lysogeny benefit a virus compared to an immediate lytic infection? Describe how a prophage is formed during lysogeny.
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