What's the difference between heterochrony and individual?
Heterochrony
Definition:
(n.) In evolution, a deviation from the typical sequence in the formation of organs or parts.
Example Sentences:
(1) A detailed analysis of the frontal, medial prefrontal and hippocampal regions also shows a heterochrony within these regions.
(2) These groups correspond to different stages of neuroblast development in vivo and their presence in the tissue cultures of different brain regions reflects the heterochrony of cell development in these regions.
(3) Direct development is achieved primarily by heterochrony, that is, by the abbreviation or elimination of larval developmental processes and the acceleration of processes involved in development of adult features.
(4) Ontogeny in the tube-crested dinosaur Parasaurolophus (Hadrosauridae) and heterochrony in hadrosaurids.
(5) The concepts of chronogenetics, heterochrony, and developmental field defects appear relevant to yet another set of patients with chromosome anomalies.
(6) It has been pointed out, that there is a complex heterochrony of regional development in the brain.
(7) Certain single malformations such as holoprosencephaly immediately suggest heterochrony by their resemblance to antecedent phylogenetic or embryologic structures.
(8) Some male sterile mutations can decouple the development of the different components of a germ cell, i.e., they may lead to a heterochrony of the development of the different subcellular structures, or they may permit the differentiation of some components of a germ cell even in the complete absence of an organelle.
(9) He has only mentioned the concept of heterochrony to which we give much more importance nowadays.
(10) The role of altered developmental timing or heterochrony in morphologic evolution has intrigued classical and modern biologists.
(11) During prenatal life of monkey and man in the development of the frontal area the phenomena of heterochrony (common for both species) and anabolia (peculiar for man only) are observed (the appearance of new more complex structures).
(12) It is theorized that hormones are a major factor in the non-random regulation of cellular heterochrony in tumourigenesis.
(13) The data obtained suggest a heterochrony and different rate of the functional callosal connexions maturation in projection and associative areas of the cortex.
(14) The perspective of heterochrony stresses the molecular history and hierarchy which is recapitulated with each pregnancy, and reconciles apparent discrepancies between the rates of molecular and morphologic evolution.
(15) In terms of heterochrony such a pattern most likely is the result of a process termed "acceleration", i.e.
(16) Notwithstanding this, gross regularities of heterochrony in the neurogenetic behavior of the different segments lead to a definition of elemental longitudinal compartments of the forebrain and mesencephalon (floor, paramedian, basal, and alar regions) on the basis of precocious differentiation of the basal region and retarded differentiation of the paramedian and alar regions.
(17) Molecular mechanisms underlying heterochrony are thereby described.
(18) We propose that such a shift in relative timing of the developmental phenomena involved inhibits pigment cell migration in embryos of the white axolotl mutant and, accordingly, that the restricted pigmentation of the mutant larva is generated through heterochrony.
(19) In its normal ontogeny, Hydractinia symbiolongicarpus, a closely related hydractiniid hydroid, not only shows morphological heterochrony similar to that induced in P. carnea by DNP, but also shows a pattern of gastrovascular flow similar to that observed in P. carnea under treatment with DNP.
(20) In view of elucidating the origin of this heterochrony, we make an electrophoretic study of the different extracts from juveniles, adults in activity, in natural sleep and awakning.
Individual
Definition:
(a.) Not divided, or not to be divided; existing as one entity, or distinct being or object; single; one; as, an individual man, animal, or city.
(a.) Of or pertaining to one only; peculiar to, or characteristic of, a single person or thing; distinctive; as, individual traits of character; individual exertions; individual peculiarities.
(n.) A single person, animal, or thing of any kind; a thing or being incapable of separation or division, without losing its identity; especially, a human being; a person.
(n.) An independent, or partially independent, zooid of a compound animal.
(n.) The product of a single egg, whether it remains a single animal or becomes compound by budding or fission.
Example Sentences:
(1) It is supposed that delta-sleep peptide along with other oligopeptides is one of the factors determining individual animal resistance to emotional stress, which is supported by significant delta-sleep peptide increase in hypothalamus in stable rats.
(2) Standardization is possible after correction by the protein content of each individual section.
(3) Although the mean values for all hemodynamic variables between the two placebo periods were minimally changed, the differences in individual patients were striking.
(4) We examined the karyotype in five individuals of roe-deer (Capreolus capreolus), coming from Southern Moravia.
(5) The effects of sessions, individual characteristics, group behavior, sedative medications, and pharmacological anticipation, on simple visual and auditory reaction time were evaluated with a randomized block design.
(6) We have amended and added to Fabian's tables giving a functional assessment of individual masticatory muscles.
(7) Five probes of high specificity to individual chromosomes (chromosomes 3, 11, 17, 18 and X) were hybridized in situ to metaphase chromosomes of different individuals.
(8) Parents of subjects at the experimental school were visited at home by a community health worker who provided individualized information on dental services and preventive strategies.
(9) The absorption of ingested Pb is modified by its chemical and physical form, by interaction with dietary minerals and lipids and by the nutritional status of the individual.
(10) A progressively more precise approach to identifying affected individuals involves measuring body weight and height, then energy intake (or expenditure) and finally the basal metabolic rate (BMR).
(11) Both apertures were repaired with great caution using individual sutures without resection of the hernial sac.
(12) We have investigated the increase in the spcDNA population upon cycloheximide treatment of individual sequences, which are found to amplify differentially.
(13) However, the groups often paused less and responded faster than individual rats working under identical conditions.
(14) Microelectrodes were used to measure the oxygen tension (PO2) profile within individual spheroids at different stages of growth.
(15) In this phase the educational practices are vastly determined by individual activities which form the basis for later regulations by the state.
(16) In the case of nonspecific loading highly trained individuals may have low VT values close to the level characteristic for normal subjects.
(17) These data, then, indicate that the ability to produce C3NeF autoantibody is present from the time of birth in normal individuals.
(18) A mean difference for individual patients between the first and second recording within 5 mm Hg was observed in 49.3% and 52.1% of patients for 24-hour systolic and diastolic blood pressure, respectively.
(19) Patients served as their individual control based on observations of at least 1 year before the study.
(20) However in the deciduous teeth from which the successional tooth germs were removed, the processes of tooth resorption was very different in individuals, the difference between tooth resorption in normal occlusal force and in decreased occlusal force was not clear.