The freshly frozen samples containing the E17K substitution in AKT1 were also analysed for PTEN mutations and for mutations in the mutational hotspots of exons 9 and 20 of PIK3CA (see Supplementary Table 1 for primer sequences of PIK3CA and PTEN).
This mutational genetic variance both depends on the mutation rate and on the phenotypic consequences of the mutations (the mutational effects).
The distribution of smokers for the different type of mutations, the mutational spectra, specific mutations (i.e. G C → T A transversions and G C → A T transitions) and location of mutations was not different for never, ex- and current smokers (van Dijk et al, 2006).
Factors such as the mutation rate, the mutational target size, and the distribution of selection coefficients must be taken into account (Hermisson and Pennings 2005).
28, 67 Antigenic evolution in more dimensions generally shows that the extent of diversity is sensitive to the mutation rate, the mutational accessibility of antigenically distinct phenotypes, and the strength of competition between strains.
In order to know if the mutations were due to changes in repeat copy number or to point mutation events, the mutational products and parental alleles were sequenced.
With the CE-IVD-marked TheraScreen K-RAS Mutation kit, the mutational status of 89 of the 100 samples could be assessed in the initial analysis.
I curated the majority of publicly available data and compiled a data set encompassing ~5 million somatic mutations from the mutational catalogs of 7042 primary cancers of 30 different classes.
Transition mutations dominated the mutational spectrum.> -wrap-foot> One straightforward pattern noted in the earlier study was continued.
Because selection experiments start from a fixed material (i.e. homozygous at all loci), the only source of genetic variance that can be used by selection comes from new mutations and the mutational heritability can be estimated directly from the slope of the response to selection [ 32, 33].
