Horizontal Gene Transfer
Q:1. A strain of living Streptococcus pneumoniae thatcannot make a capsule is injected into mice and has no adverseeffect. This strain is then mixed with a culture of heat-killedStreptococcus pneumoniae that when alive was able to makea capsule and kill mice. After a period of time, this mixture isinjected into mice and kills them. In terms of horizontal genetransfer, describe what might account for this.
Q:2. A Gram-negative bacterium that was susceptible to mostcommon antibiotics suddenly becomes resistant to several of them.It also appears to be spreading this resistance to others of itskind. Describe the mechanism that most likely accounts forthis.
