Mutation frequencies but not mutant frequencies in Big Blue mice fit a Poisson distribution.

Abstract excerpt

Transgenic mutation assays generally use mutant frequencies to estimate mutation frequencies but the degree to which clonal expansion inflates mutant frequencies is largely unknown. Mutant frequency is defined as the fraction of cells carrying mutations in the gene of interest and, according to the standard Big Blue protocol, is determined by dividing the number of mutant plaques by the total number of plaques...

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