viruses and cloning

viruses and cloning - Principles of Biology Viruses and...

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Principles of Biology Viruses and Cloning Viruses and genetic material Viral DNA may become part of the host chromosome. Viruses are genes packaged in protein. The lytic cycle When phage DNA enters a lytic cycle inside a bacterium, it is replicated, transcribed, and translated. The new viral DNA and protein molecules then assemble into new phages, which burst from the host cell. The lysogenic cycle In the lysogenic cycle , phage DNA inserts into the host chromosome and is passed on to generations of daughter cells. Much later, it may initiate phage production. Phage reproductive cycles Many viruses cause disease when they invade animal or plant cells. Some viruses can enter a cell and remain dormant for long periods of time with no effects. “Herpes simplex 1” - cold sore virus - infects around 75% of Americans. “Herpes simplex 2” - genital herpes - infects around 20% of Americans. HIV is also a “latent” virus.
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This note was uploaded on 10/05/2011 for the course BIOL 1543 taught by Professor Roberts during the Spring '08 term at Arkansas.

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viruses and cloning - Principles of Biology Viruses and...

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