However, intriguing requirements for particular functions in certain physiological functions remain unexplained.
Much of my work is motivated by the (perhaps dangerously mystical) idea that biological systems may be optimized for particular functions, operating at or near some fundamental physical limits to their performance.
Steps toward the diagnosis of suspected organic disorders include obtaining a full history of the patient followed by a detailed examination of the patient's mental state, with additional tests for particular functions as necessary.
In particular, the dominant size of the neocortex in large-brained mammals would be a by-product or "spandrel 11, of the developmental processes that lead to the evolution of an overall larger brain, rather than a result of selective pressures for particular functions or behaviours5, 8, or vice versa (selection for a large neocortex might force the remainder of the brain to keep pace).
There has been significant specialization for particular functions in unrelated species; for instance, in the bullet shape of falcons, in the spiculed feet of ospreys and certain eagles, and, perhaps most striking, in the auditory specializations shared by harriers and forest falcons.
What the citation did not say was that this work also allows clones to be made from adult animals, potentially including people.A stem cell is one that can differentiate into daughter cells specialised for particular functions, and all the cells in a body are thus derived from stem cells.
Combined with the estimated prevalence of plausible hydropathic patterns (for any fold) and of relevant folds for particular functions, this implies the overall prevalence of sequences performing a specific function by any domain-sized fold may be as low as 1 in 1077, adding to the body of evidence that functional folds require highly extraordinary sequences.
As more such species are sequenced, he says, "everyone will be using these" genomes to find out which genes are responsible for particular functions, especially for plant pathogens such as Fusarium, which causes ear rot in corn and puts out mycotoxins in animal feed.
Although PPK1 and PPK2 might work by distinct mechanisms, PPK1 may require direct or indirect participation of PPK2 for particular functions and vice-versa, which partially explains the overlapping phenotypes in these proteins.
Monoallelic expression may thus be evolutionary advantageous for particular functions.
Little is known about the mechanisms by which synapses become specialized for particular functions.
