epigenesis


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Related to epigenesis: Epigenetics

epigenesis

 [ep″ĭ-jen´ĕ-sis]
the development of an organism from an undifferentiated cell, consisting in the successive formation and development of organs and parts that do not preexist in the zygote. adj., adj epigenet´ic.

ep·i·gen·e·sis

(ep'i-jen'ĕ-sis),
1. Development of offspring from a zygote. Compare: preformation theory.
2. Regulation of the expression of gene activity without alteration of genetic structure.
[epi- + G. genesis, creation]

epigenesis

/epi·gen·e·sis/ (-jen´ĕ-sis) the development of an organism from an undifferentiated cell, consisting in the successive formation and development of organs and parts that do not preexist in the fertilized egg.epigenet´ic

epigenesis

(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

[ep′ijen′əsis]
Etymology: Gk, epi + genein, to produce
(in embryology) a theory of development in which the organism grows from a simple to more complex form through the progressive differentiation of an undifferentiated cellular unit. Compare preformation. epigenesist, n., epigenetic, adj.

ep·i·gen·e·sis

(ep'i-jen'ĕ-sis)
1. Development of offspring from a zygote.
2. Regulation of the expression of gene activity without alteration of genetic structure.
[epi- + G. genesis, creation]

epigenesis

the formation of entirely new structures during the development of the EMBRYO.

epigenesis

the development of an organism from an undifferentiated cell, consisting in the successive formation and development of organs and parts that do not preexist in the fertilized egg.
References in periodicals archive ?
Van Speybroeck, Linda, 'From Epigenesis to Epigenetics: The Case of C.
This tension appears in the generational split between the first two poems she discusses--Smart's and Blake's--which model epigenesis in form and theme, while the second pair--Shelley's and Keats's poems--express a "later, more symbolic" poetics of epigenesis (47).
Though widely accepted as the official scientific explanation for evolution, exerting great influence on both our interpretation of biodiversity and our understanding of the world, modern synthesis lacks some major elements, to wit: endosymbiosis, reticulate evolution, the modern synthesis of embryonic development and evolution (evo-devo), epigenesis, phenotypic plasticity, evolvability; which involve several evolutionary mechanisms such as: fusion of genomes and gene fragments, methylation of DNA, tool kits, regulatiory cis-elements, hybridization and polyploidy.
Si Herder transforma la epigenesis de la Naturaleza en el despliegue de una fuerza desconocida, fruto de la divagacion mas que del trabajo de la reflexion, Forster niega que ese sistema nos permita encontrar un termino medio entre la determinacion y la libertad en la sinfonia de formas naturales.
A la vez, la expresion de los genes esta determinada por el ambiente mediante la epigenesis.
Epigenesis implies a level of complexity beyond gene-gene interaction and extends to interaction between genes, between genes and gene products (proteins), and between all of these and environmental signals, including, of course, the individual organismal experience.
En su obra Primae Linae Physiologiae, escrita en el periodo en el que todavia era partidario de la epigenesis, Haller esbozo los hechos que lo empujaron necesariamente en esa direccion.
This patent is licensed to Hybridon's spinoff company, OriGenix Technologies, and EpiGenesis Pharmaceuticals for certain applications.
Primordial Germ Cells in the Invertebrates: From Epigenesis to Preformation.
To evoke an ancient metaphor for the universe: the whale identifies itself with the ocean and devours and digests that ocean, so as to shower water over itself out of emptiness, wine, Plato's epigenesis.
Federle's grouping of works also suggests a kind of epigenesis of abstraction: each stage offers a greater, more exacting epiphany of the idea of abstraction as such and the essential consciousness--a consciousness that can recognize and deal with essences (in a Husserlian sense)--than the preceding one.