[AndrewC]

The SOS response leads to an increase in genetic diversity. The vast majority of that genetic diversity is eliminated by selection. Only those mutations that are amenable to the stress survive and contribute to the resulting population.

That is not what that chart shows. In "normal" mutations the "hotspot" at location 400 shows a mutation making up around 8 percent of the isolates. When subjected to SOS diversity goes down. It becomes more specific and the mutation at 400 makes up around 25 percent of the isolates and is of a different form of insertion. That is not genetic diversity. That is a targeted response.

[CottShop]

[[That is not genetic diversity. That is a targeted response.]]

Almost as though they were....Designed to do this.... Eeeek- the ugly ‘D’ word!