The results of the Luria Delbruck fluctuation experiment indicated that
A)bacteria are naturally resistant to phage.
B)a low level of any bacterial population is naturally resistant to phage.
C)bacteria become resistant to phage by mutation when exposed to phage.
D)bacteria become resistant to phage by random spontaneous mutation.
E)the phage mutate to produce large plaques with sharp edges.

Question

Quizplus · Accepted Answer

The Luria Delbruck fluctuation experiment demonstrated that bacterial resistance to phages was not a result of natural selection, but rather due to random spontaneous mutations that pre-existed exposure to the phage. This supports the idea that evolution can occur by chance events, rather than solely through natural selection.

The Results of the Luria Delbruck Fluctuation Experiment Indicated That