Question 16

(Multiple Choice)

Figure 9-7 shows an experiment used to determine the spontaneous mutation rate in E.coli.If the spontaneous mutation rate in E.coli is 1 mistake in every 109 nucleotides copied, about how many colonies would you expect to see on the plates lacking histidine if you were to assay 1011 cells from the culture for their ability to form colonies? Figure 9-7 shows an experiment used to determine the spontaneous mutation rate in E.coli.If the spontaneous mutation rate in E.coli is 1 mistake in every 10<sup>9</sup> nucleotides copied, about how many colonies would you expect to see on the plates lacking histidine if you were to assay 10<sup>11</sup> cells from the culture for their ability to form colonies?   Figure 9-7 A)1 B)2 C)10 D)100 Figure 9-7


A)1
B)2
C)10
D)100

Answer