(n.) The act of unfolding or unrolling; hence, in the process of growth; development; as, the evolution of a flower from a bud, or an animal from the egg.
(n.) A series of things unrolled or unfolded.
(n.) The formation of an involute by unwrapping a thread from a curve as an evolute.
(n.) The extraction of roots; -- the reverse of involution.
(n.) A prescribed movement of a body of troops, or a vessel or fleet; any movement designed to effect a new arrangement or disposition; a maneuver.
(n.) A general name for the history of the steps by which any living organism has acquired the morphological and physiological characters which distinguish it; a gradual unfolding of successive phases of growth or development.
(n.) That theory of generation which supposes the germ to preexist in the parent, and its parts to be developed, but not actually formed, by the procreative act; -- opposed to epigenesis.
(n.) That series of changes under natural law which involves continuous progress from the homogeneous to the heterogeneous in structure, and from the single and simple to the diverse and manifold in quality or function. The pocess is by some limited to organic beings; by others it is applied to the inorganic and the psychical. It is also applied to explain the existence and growth of institutions, manners, language, civilization, and every product of human activity. The agencies and laws of the process are variously explained by different philosophrs.
Example Sentences:
(1) The process of sequence rearrangement appears to be a significant part of the evolution of the genome and may have a much greater effect on the evolution of the phenotype than sequence alteration by base substitution.
(2) It is argued that this process drove the evolution of present 5' and 3' splice sites from a subset of proto-splice sites and also drove the evolution of a more efficient splicing machinery.
(3) It has been possible to observe the evolution of their lesions.
(4) Gradual evolutionary change by natural selection operates so slowly within established species that it cannot account for the major features of evolution.
(5) The early absolute but transient dependence of these A-MuLV mast cell transformants on a fibroblast feeder suggests a multistep process in their evolution, in which the acquisition of autonomy from factors of mesenchymal cell origin may play an important role.
(6) The evolution and function of multiple forms of a given photosynthetic pigment in vivo are discussed.
(7) Evolution of serological procedures was continuous through this period but without clear evidence of improvement in performance of antibody detection although performance in the UK appears to be comparable with that elsewhere.
(8) With the successful culture of these tissues, their development, biochemistry, and physiology, potentially of great importance in understanding early vertebrate evolution, can be better understood.
(9) This situation highlights the potential importance of molecules with different inheritance patterns in elucidating complex cases of reticulate evolution.
(10) The evolution of tissue damage in compressive spinal cord injuries in rats was studied using an immunohistochemical technique and by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) analysis.
(11) Republican presidential hopeful Scott Walker has refused to say whether he believes in the theory of evolution, arguing that it is “a question a politician shouldn’t be involved in one way or the other”.
(12) It is mentioned that the lack of a valuable status for industrial physicians may adversely affect the evolution of training programs in Switzerland.
(13) Assessment of a predictive factor for the evolution of the disease is not yet possible.
(14) These studies indicate that, in three models of acute liver injury, the net influx of calcium across the plasma membrane is increased early in the evolution of the injury before irreversible damage occurs.
(15) The strong homology of mammalian L27' to yeast L29 suggests a function which has been conserved throughout evolution, and thus L27' may also be involved in peptidyl transferase activity.
(16) The diversity of the non-Hodgkin's groups, the continued evolution of histopathologic classifications, and the great frequency of advanced disease in the lymphocytic subgroups make the Ann Arbor classification of only limited value for the non-Hodgkin's lymphomas.
(17) We show how this model would explain the perinatal or infantile onset of the disease, the variability of the rate of evolution between the different SMA forms, and the fact that motoneuron loss is much more dramatic in SMA than in even advanced cases of myopathy.
(18) Evolution into acute myeloid leukemia occurred in 11 patients.
(19) On evaluation of the time evolution of the symptoms we found that most patients continued to show them until September each year.
(20) The evolution with time of cardio-respiratory variables, blood pressure and body temperature has been studied on six males, resting in semi-nude conditions during short (30 min) cold stress exposure (0 degree C) and during passive recovery (60 min) at 20 degrees C. Passive cold exposure does not induce a change in HR but increases VO2, VCO2, Ve and core temperature Tre, whereas peripheral temperature is significantly lowered.
Pleistocene
Definition:
(a.) Of or pertaining to the epoch, or the deposits, following the Tertiary, and immediately preceding man.
(n.) The Pleistocene epoch, or deposits.
Example Sentences:
(1) Amino acid analyses have been made of the insoluble protein, soluble peptide, and free amino acid fractions isolated from a series of fossil pecten shells of ages from the Pleistocene through the Jurassic.
(2) Genetic data on present human population relationships and data from the Pleistocene fossil hominid record are used to compare two contrasting models for the origin of modern humans.
(3) The present study on 47 naturally fractured enamel surfaces of premolar and molar teeth of Plio-Pleistocene East African hominids measured enamel thickness, slope of incremental lines (striae of Retzius), and the morphology of Hunter Schreger bands (HSBs).
(4) The subocclusal morphology of 168 permanent mandibular premolars (N = 77) and molars (N = 91) of Plio-Pleistocene hominids has been investigated.
(5) The morphological comparison shows strong affinities to comparative material from the Upper Pleistocene like Cro-Magnon.
(6) The cultural associations in the earlier late Pleistocene are with the Middle Stone Age.
(7) The latest fossil is the only intact skull ever found of a human ancestor that lived in the early Pleistocene, when our predecessors first walked out of Africa.
(8) The diets of these Plio-Pleistocene hominids appear to have been qualitatively dissimilar.
(9) The concentration of climate-warming carbon dioxide is now higher than at any time since the dawn of humans 2.6m years ago, an event itself marked by a new geological epoch called the Pleistocene.
(10) The morphology of the nasal bones and their articulations with the adjoining frontal and maxillary bones have recently been reported in Nature and elsewhere to be diagnostic of hominoid taxa, and cladistic analysis based on these features has been used to assign two immature Plio-Pleistocene hominoids (AL 333-105 and Taung) to different lineages (Paranthropus and Homo, respectively).
(11) Pilbeam and Gould have discussed African Plio-Pleistocene hominid evolution in the context of allometry (size-dependent morphological change).
(12) The antiquity of the lesion is demonstrated by its appearance among late Pleistocene human remains.
(13) glabrata (Say, 1818) from upper Pleistocene (or Holocene) based on paleontologic and stratigraphic data and in agreement with shell morphology.
(14) The dwarfing of large mammals on islands occurred repeatedly in the Pleistocene.
(15) The coefficient of variation of ECV that characterizes a group composed of all Plio-Pleistocene gracile hominids does not support a single polytypic species interpretation of this assemblage.
(16) Extinctions occurred throughout the European Pleistocene, but until the late Pleistocene most losses were replaced by the evolution or immigration of new species, and most of those lost without replacement were small mammals.
(17) Fragmented mandibles of two Pleistocene lions (Panthera leo atrox) recovered from Yukon Territory possessed acquired pathological changes and congenital abnormalities, judging from the anatomy of contemporary and modern lions.
(18) Associated fore- and hindlimb parts of five individuals are known from the hominid Plio-Pleistocene fossil collections in Africa.
(19) The ancient Pleistocene call of the moon, of salt in the blood, and genetic encoding buried deep in the chromosomes back there beneath the layers of culture – and counterculture – are making successful businesswomen, professionals and even the mothers of grown children stop and reconsider.” The metaphor of the biological clock sounded less florid than the metaphors that followed, but it evinced the same determinism.
(20) The former model infers multiple regional archaic-modern connections and the ancient establishment of regional characteristics, whereas the latter model implies only an African archaic-all modern relationship, with recent (late Pleistocene) development of regionality.