Evolution proceeds by accumulating functional solutions, necessarily forming an uninterrupted lineage from past solutions of ancestors to the current design of extant forms.
The observed species richness dependent pattern of low functional diversity indicates that communities with low species richness accumulate functional traits randomly, whereas species in species-rich communities are more similar to each other than predicted by random assemblages and therefore exhibit an accumulation of stream-specific functional traits.
We also report that 18% of recent human paralogous pairs evolve with significant asymmetry and that faster evolving gene copies accumulate functional mutations at a significantly higher proportion then slowly evolving genes from the same pairs or genes from non-asymmetrically evolving pairs.
Evidence has also accumulated linking functional associations between huntingtin and HDACs.
Although morphologic clues of mitochondrial dysfunction in these equine diseases have accumulated, a functional confirmation is still pending.
Nevertheless, much evidence has accumulated that functional brain hypothyroidism is associated with depression and with bipolar and rapid-cycling manic-depressive symptoms.
These four clades are estimated to have diverged between 30 65 Mya, and over this time they have accumulated important functional differences [ 10, 18].
At the systems level, evidence has accumulated for functional alterations in white matter tracts [ 65- 68] and overall imbalance between excitation and inhibition in the brain [ 69- 72].
The resequencing of different morphotypes of B. rapa, such as L144 and a turnip, showed that genes located in LF accumulated fewer functional mutations (non-synonymous single-nucleotide polymorphisms and frame-shift InDels) than those located in the MF subgenomes.
This difference in TRR signatures suggests that the GmARFs of the former group might act as an activator and those of the latter as repressors, respectively, based on the evidence accumulated from functional analyses of Arabidopsis ARFs.
