chiasma

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chiasma

(kīăz`mə): see crossing overcrossing over,
process in genetics by which the two chromosomes of a homologous pair exchange equal segments with each other. Crossing over occurs in the first division of meiosis. At that stage each chromosome has replicated into two strands called sister chromatids.
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chiasma

[kī′az·mə]
(anatomy)
A cross-shaped point of intersection of two parts, especially of the optic nerves.
(cell and molecular biology)
The point of junction and fusion between paired chromatids or chromosomes, first seen during diplotene of meiosis.
References in periodicals archive ?
Cartesian change, chiasmic change: The power of living expression.
Reading Conrad through James and James through Conrad, this section will trace a chiasmic link between the two plots.
(p163) At the chiasmic interface of human and computer, I see and am seen, I touch and am touched by the digital.
In my own work I have invoked chiasmic depth as thin relief.
Chapter three features a similar reading of Les Liaisons dangereuses, focusing on the Prevan cycle at the juncture of the chiasmic structural organization of the novel into groups of 50, 37, 37, and 50 letters.
Whether it is JC's "strong opinions" or Costello's cantankerous lectures, the chiasmic transfer of textual value from the mechanics of narrative fiction to the avowal of unfashionable beliefs can nevertheless only take place inside a novelistic form--a form in the process of disintegrating as the transfer proceeds.
Flesh brings to the world the capacity to turn the world back on itself, to induce its reflexivity, to fold over itself, to introduce that fold in being in which subjectivity is positioned as a perceiving, perspectival frame." (15) This model enables the philosopher to eliminate crucial dichotomies such as the external and the internal, the visible and the invisible or the subject and the object and it also introduces a reflexivity grounded in the very chiasmic relationship of such categories.
Gabriel vocor" (205; underline added), the chiasmic structure of the inscription indicating both the active calling out of love (vox Amoris) and the passive "being called" (vocor), presumably by the God who "is," also, Love.
Granting Hajila's imagined perspective a place on the printed page, Isma proposes a strategic, chiasmic co-authorship that suggests that without the narrated there would be no narrator; the narrator's words on the printed page transcribe or reflect the thoughts of the narrated.
The Middle Voice of Ecological Conscience: A Chiasmic Reading of Responsibility in the Neighborhood of Levinas, Heidegger and Others.
The publications of Poe's poems span from 1831 to 1845, but the title that seems most chiasmic in regard to Winthrop ('the City in the Sea') was the revised title that came out last, after A Model of Christian Charity was published.
The author perceives a chiasmic structure in the Judean War as it reports rebellious movements at the beginning and at the end.