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POLYTENIZATION [1 record]

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Record 1 2004-10-21

English

Subject field(s)
  • Molecular Biology
  • Genetics
DEF

The repeated replication of a chromosome without separation of the daughter chromosomes.

OBS

A polytene chromosome is thus a ribbon-like arrangement of multiple chromosomes lying parallel to one another.

Key term(s)
  • polytenisation

French

Domaine(s)
  • Biologie moléculaire
  • Génétique
CONT

[...] la polyténisation qui laisse accoler les mille copies issues des mitoses successives, doublée du rapprochement des chromosomes homologues, forme une structure enchevêtrée, probablement stabilisée par des protéines fixées à l'ADN.

CONT

Il y a polyténisation des chromosomes dans certains tissus (par exemple, glandes salivaires ou intestin de la larve [de drosophile]).

Spanish

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