As mentioned previously, with data aggregation there appears to be a trend that the second division and the stem-cell stage also have appreciable mutations (Table 6), but the log-likelihood ratio tests in Table 7 does not provide significant support for the trend.
Nearly all solid tumors in adults carry, in addition to driver mutations, appreciable numbers of mutations which do not confer a growth advantage; non-small-cell-lung-cancers are especially rich in these passenger mutations because of exposure to carcinogens [ 2] before and during tumor cell development.
Therefore some adopt the pragmatic approach that any system with no recombination and a potential for appreciable slightly deleterious mutation rates could be driven to extinction by Muller's ratchet [ 3].
Although L9 deletion mutants do not exhibit appreciable growth phenotypes, mutations in the essential ribosome biogenesis GTPase Der protein cause dependence on L9.
The few studies that compared both immunohistochemical staining and p53 mutation found appreciable staining in tumours harbouring mutations, as expected (Esrig et al, 1993; Cordon-Cardo et al, 1994; Oyasu et al, 1995; Vet et al, 1995; Abdel-Fattah et al, 1998; Bernardini et al, 1999).
Occasionally, some of these small effect mutations reach appreciable frequencies in the population, though they can often be incorrectly classified as neutral mutations.
With individuals accumulating appreciable numbers of germline mutations in each generation (for humans, for example this number is estimated to be ∼74 56), each individual genome can be considered as a natural 'perturbation'perturbation
In taxa where there is an appreciable number of beneficial mutations, it will be interesting to see whether amino acid identity is also correlated with the rate of change.
This seems a short time lag for adaptation to have arisen from new mutations (i.e. the best situation to detect the signature of selection), although high fecundities and the large size of oyster populations would allow an appreciable influx of new mutations in each generation.
Nonsense mutations segregated at appreciable frequencies in TLR09B in L. montandoni, the more common of these mutations produced a stop codon in position 48, indicating that the respective allele does not encode a functional protein.
