epigenesis


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Related to epigenesis: Epigenetics

ep·i·gen·e·sis

 (ĕp′ə-jĕn′ĭ-sĭs)
n.
1. Biology The theory that an individual is developed by successive differentiation of an unstructured egg rather than by a simple enlarging of a preformed entity.
2. Geology Change in the mineral content of a rock because of outside influences.

epigenesis

(ˌɛpɪˈdʒɛnɪsɪs)
n
1. (Biology) the widely accepted theory that an individual animal or plant develops by the gradual differentiation and elaboration of a fertilized egg cell. Compare preformation2
2. (Geological Science) the formation or alteration of rocks after the surrounding rock has been formed
3. (Geological Science) alteration of the mineral composition of a rock by external agents: a type of metamorphism
ˌepiˈgenesist, epigenist n

ep•i•gen•e•sis

(ˌɛp ɪˈdʒɛn ə sɪs)

n.
1.
a. the stepwise process by which genetic information, as modified by environmental influences, is translated into the substance and behavior of an organism.
b. the theory that an embryo develops from the successive differentiation of an originally undifferentiated structure (opposed to preformation).
2. ore deposition subsequent to the original formation of the enclosing country rock.
[1800–10]
ep`i•gen′e•sist, e•pig•e•nist (ɪˈpɪdʒ ə nɪst) n.
ep`i•ge•net′ic (-dʒəˈnɛt ɪk) adj.
ep`i•ge•net′i•cal•ly, adv.

epigenesis

1. the appearance of a secondary symptom in a disease or illness.
2. the secondary symptom itself. See also biology; geology. — epigenetic, adj.
See also: Disease and Illness
the biological theory that germ cells are structureless and the embryo develops through the action of environment on the protoplasm. Cf. preformation. See also birth; disease and illness; geology. — epigenetic, adj.
See also: Biology
the formation of a cell as a new product and not as the result of development from some existing cell. — epigenetic, adj.
See also: Cells
the process of metamorphism. See also biology; disease and illness. — epigenetic, adj.
See also: Geology
the theory that embryonic development is totally controlled by the cell’s environment. Cf. syngenesis.epigenesist, n. — epigenetic, adj.
See also: Birth
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.epigenesis - a geological change in the mineral content of rock after the rock has formed
metamorphism - change in the structure of rock by natural agencies such as pressure or heat or introduction of new chemical substances
References in periodicals archive ?
Viven una extrana vida que depende de los diversos enlaces con los que estan tejidos los modelos logico-matematicos, que dan nacimiento a seres casi autonomos, intermediarios (5), en constante epigenesis por nuestra interaccion estructurante.
Microscopios y embriologia: Preformacionismo y Epigenesis
The 11th edition of this textbook on human development has been revised to "significantly shorten the text" while providing students with new research in evolutionary theory, brain development, epigenesis, dynamic systems theory, mental health and Alzheimer's disease.
This is a good reminder of how long ago the waxes were produced, when epigenesis had yet to fully overcome the idea of preformation.
Evidentemente, no pretendemos agotar la exposicion de esa complejidad en estas breves paginas; solo plantearemos como ese proceso se da en la vida humana desde su constitucion tratando de tener en cuenta los aportes de la embriologia humana y el proceso de epigenesis que se conoce actualmente.
The term "epigenesis" captures this idea of development unfolding from the interplay of genes and environment through many interactions over time.
See Helene Furjan and Peter Lloyd Jones, "Epigenesis," in via: Occupation (Philadelphia: School of Design, University of Pennsylvania, 2008), 110-113.
Disclosure of details about one's life is essential in the development of satisfying intimate relationships (Laurenceau, Barrett, & Pietromonaco, 1998; Troy & Lewis-Smith, 2006) and occurs naturally in the epigenesis of relationships (Wynne, 1984).
(2005), "Molecular epigenesis, molecular pleiotropy, and molecular gene definitions".
En palabras de Maturana: "no hay diferencia intrinseca entre conducta instintiva y conducta aprendida, ya que ambas son el resultado de la epigenesis del organismo y surgen en cada caso, como consecuencia inevitable de la historia de interacciones de este con conservacion de la organizacion..." (Maturana 1982).
The paradigm shift from the idea of preformation to that of epigenesis produced a new ambiguity: while all people are now equipped with the triumphal knowledge that they will pass on a biological inheritance, this triumph is undermined by the insight that each of us is the product of a biological inheritance.