Amphitene

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masculine noun / adjective (biology / cytogenetics)

Definition

A transient stage in the prophase of the first meiotic division, occurring between leptotene and pachytene, synonymous with zygotene, during which homologous chromosomes begin to align and pair up through synapsis. In this structural phase, the chromatid threads often present a characteristic bouquet arrangement, with one end thickened and the other thin during the pairing process.

Bilingual Equivalents

  • Amphitene
  • Zygotene

Grammatical & Source Details

Inflection Type Inanimate masculine noun, standard scientific plural variations.
Formation Derived from Greek combining forms 'amphi' (both, around) and 'tainia' (ribbon, band).
Spelling / Pronunciation [am.fi.ˈten]
Source Glossary of Genetics and Cytogenetics Standards

Contextual Usage Examples

RO: În faza de amfiten, filamentele cromozomiale se apropie treptat pentru a forma bivalenții.

EN: In the amphitene phase, the chromosomal threads gradually move closer to form bivalents.

RO: Analiza microscopică a pus în evidență un nucleu celular blocat în stadiul de amfiten persistent.

EN: Microscopic analysis revealed a cell nucleus locked in a persistent amphitene stage.

RO: Complexul sinaptonemal se asamblează rapid pe măsură ce celula trece prin faza amfitenă.

EN: The synaptonemal complex assembles rapidly as the cell passes through the amphitene phase.

Idioms & Phrases

Stadiu amfiten / Amphitene stage

RO: Intervalul temporal exact din meioză în care cromozomii se unesc parțial, formând structuri în formă de Y.

EN: The exact temporal interval in meiosis where chromosomes partially unite, forming Y-shaped structures.

Configurație de amfiten / Amphitene configuration

RO: Dispunerea polarizată a telomerelor atașate de membrana nucleară, specifică începutului sinapsei.

EN: The polarized arrangement of telomeres attached to the nuclear membrane, specific to the onset of synapsis.

Tranziție amfiten-pahiten / Amphitene-pachytene transition

RO: Punct critic de control celular în care împerecherea cromozomilor se definitivează pe întreaga lor lungime.

EN: A critical cell checkpoint where chromosome pairing is completed along their entire length.

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