pangenesis


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pan·gen·e·sis

 (păn-jĕn′ĭ-sĭs)
n.
A theory of heredity proposed by Charles Darwin in which gemmules containing hereditary information from every part of the body coalesce in the gonads and are incorporated into the reproductive cells.

pan′ge·net′ic (-jə-nĕt′ĭk) adj.
pan′ge·net′i·cal·ly adv.

pangenesis

(pænˈdʒɛnɪsɪs)
n
(Biology) a former theory of heredity, that each body cell produces hereditary particles that circulate in the blood before collecting in the reproductive cells. See also blastogenesis1
pangenetic adj
ˌpangeˈnetically adv

pangenesis

the theory advanced by Darwin, now rejected, that each part of the body is represented in each cell by gemmules, which are the basic units of hereditary transmission. — pangenetic, adj.
See also: Evolution
the theory advanced by Darwin, now rejected, that transmission of traits is caused by every cell’s throwing off particles called gemmules, which are the basic units of hereditary transmission. The gemmules were said to have collected in the reproductive cells, thus ensuring that each cell is represented in the germ cells. Cf. blastogenesis. — pangenetic, adj.
See also: Heredity
Translations
Pangenesis
References in periodicals archive ?
Ek olarak, Darwin'in Pangenesis teorisine gore, cevresel faktorlerin etkisiyle somatik hucrelerde olusan pangenlerin kan dolasimi ile gametlere ulasmasi, cevresel faktorlerin etkisinin yeni nesillere kalitimini saglayan bir mekanizma olarak ileri surulmustur (2).
Also, Glass discusses Darwin's book Pangenesis in which Darwin reintroduces the old Lamarckian idea of the inheritance of acquired characteristics.
10) Darwin's idea, postulated in The Variation of Plants and Animals under Domestication (1868), was that heredity was passed on through a process he called pangenesis, a complicated system where, in the words of George John Romanes, "every cell in the body casts off 'gemmules,' which are the carriers of heredity from their respective tissues to the germinal elements" (1893a, 512).
To explain the source of new genetic information needed to produce the variation on which natural selection could work, Darwin advocated the idea of pangenesis, which can be traced back to Hippocrates circa 400 B.
Darwin's invention: inheritance & the "mad dream" of pangenesis.
This passage occurs toward the end of a lengthy argument against pangenesis, most of which has been directed against theories that posit the secretion of semen from the body kata meros.
Conviene recordar que Darwin no conto con una teoria de la herencia adecuada y que, mediante el mecanismo de la pangenesis, siguio de cerca los esquemas lamarckianos de herencia de los caracteres adquiridos.
Correns asistio al encuentro sin participar activamente y de Vries estuvo ausente de la ceremonia pues, aparentemente, preferia que los motivos de su inmortalidad fueran sus propias teorias sobre la mutacion y la pangenesis intracelular, y no ser recordado simplemente como el codescubridor de Mendel [11].
With the development of his theory of pangenesis in 1868, Darwin increasingly turned to the inheritance of acquired characteristics to supply the variation needed for evolution, which inevitably diminished the role of natural selection.
La obra de Maupertuis va a tener notable influencia en Buffon, que le reconoce sus aciertos en la teoria de la generacion, y que de la misma manera intentara proponer una teoria de moleculas organicas (18), que como en aquel, provendrian de una recopilacion de particulas de todo el cuerpo, en una especie de pangenesis que explicaria la reproduccion de los seres vivos a traves de lo que el denomina el molde interior; una especie de molde tridimensional vivo que permite reproducir estructuras de los organos de los que esta formado un ser vivo (19).
Menstruation is not discussed here, implying that menstruation drew blood from all areas of the female body, in a Hippocratic pangenesis model, and therefore relieved the entire body.
Thus, a realist interpretation of pangenesis as approximately true was unwarranted.