If one argues that a Mendelian mutation is chance, what one means is with respect to that particular theory it is chance, but one may well believe that the mutation came about by normal regular causes and that if these were all known, then it would not longer be chance at all but necessity.
Fisher ([1930], pp. 38-40) devised a toy model of factors influencing a new mutation's chance of being favorable, which may be a useful framework for understanding the Cambrian explosion.
47 This is also dependent on whether the fetus has inherited the GCK mutation (50% chance).
For example, if the genetic distance of each marker is 10 cM from the mutation, the chance of a double recombination event is 1% (0.1 × 0.1 × 100).
The original 2010 paper contains the sentence "Statistically significant sequence similarity can arise from factors other than common ancestry, such as convergent evolution due to selection, structural constraints on sequence identity, mutation bias, chance, or artefact manufacture".
Within each individual cell, there is a large set of 'heat-shock proteins' (HSPs) that manages the folding and operation of the products of gene expression, and one of the actions of these HSPs is to sequester or remove the abnormal proteins produced as the result of mutation or chance misfolding.
Although we did not perform cDNA or gene dosage analysis to detect large duplications or deletions, given that the HTRA2 mutations reported to date are missense mutations, the chance that our study underestimated the mutational frequency is relatively small.
Specifically, we can calculate the probability of finding 0/20 DD and 0/12 EE mutations by chance, given that we found 7/10 AA mutations, at p<0.0001 and p<0.001, respectively, using Fisher's exact test.
Whole genome sequencing (WGS) has been used in model organisms such as Caenorhabditis elegans[ 18] and Saccharomyces cerevisiae[ 24, 25] to identify the numbers of mutations per genome, the ratio of silent vs. non-silent mutations, the chance of generating mono-allelic traits and other genome-wide analyses.
We show that interference interactions can drastically affect process and state in large asexual populations: Adaptation generates beneficial driver mutations, but a substantial fraction of allele changes are passenger mutations, whose chance of fixation depends only weakly on their selection coefficient.
