Finally, the resolution of the quantitative microarray profiling (∼15% difference in inclusion levels) may hide an important fraction of changes in AS levels associated with changes in ESR sequences [29], [30], [35].
To the present authors the evidence currently in the literature does suggest that horizontal gene transfer accounts for a non-negligible and maybe even a large fraction of changes in gene content, at least among closely-related genomes.
The immune functional groups comprised a relatively small fraction of changes in the skin (only two KEGG pathways) but were predominant in the spleen (five of ten terms included in Table 1); inflammatory response and complement and coagulation cascades were the most enriched terms.
They partition the flux control coefficient through the changes in each intermediate, i.e. quantifies what fraction of the change in the flux through enzyme i can be attributed to the change in metabolite x.
However, frequencies for no change polymorphisms are significantly lower than intron polymorphisms (table 3), suggesting that some fraction of no change mutations may themselves be negatively selected in D. simulans.
This "cannot explain more than a small fraction" of the change at the bottom.
According to the IPCC, a large fraction of climate change is thus "irreversible on a human time-scale", except if man-made CO2 emissions are sucked out of the atmosphere over a long period.
If the mutations continue, the frequency of A1 alleles will gradually decrease, because a fraction of them change every generation to A2.
