BSC 310 Study Guide - Final Guide: Horizontal Gene Transfer, Homologous Recombination, Dna Replication

• School: University of Alabama
• Department: Biological Sciences
• Course: BSC 310
• Professor: Julie Olson

Document Summary

If plasmid genes are expressed in the recipient cell, it becomes a donor and can transfer the plasmid to other recipient cells. Gene transfer in archaea and other genetic events. Virus symmetry: nucleocapsids are constructed in highly symmetrical ways, two major kinds of symmetry in viruses which correspond to the two primary shapes, rod-shaped viruses have helical symmetry, spherical viruses have icosahedral symmetry. Attachment and entry of bacteriophage t4: proteins on the external surface of the virion interact with specific host cell receptors (usually proteins, carbohydrates, glycoproteins, lipids, or lipoproteins) Dna molecule: t4 genome is replicated as a unit and then several units are combined to form a longer. If this repressor is inactivated or its synthesis is stopped, the prophage can be induced to revert to the lytic stage (where it lyses its host after viral replication and assembly)