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ILLEGITIMATE CROSS-OVER [1 record]
Record 1 - internal organization data 2026-03-11
Record 1, English
Record 1, Subject field(s)
- Genetics
Record 1, Main entry term, English
- unequal crossing-over
1, record 1, English, unequal%20crossing%2Dover
correct, noun
Record 1, Abbreviations, English
Record 1, Synonyms, English
- unequal crossing over 2, record 1, English, unequal%20crossing%20over
correct, noun
- unequal cross-over 3, record 1, English, unequal%20cross%2Dover
correct, noun
- unequal cross over 4, record 1, English, unequal%20cross%20over
correct, noun
- illegitimate crossing-over 5, record 1, English, illegitimate%20crossing%2Dover
noun
- illegitimate crossing over 6, record 1, English, illegitimate%20crossing%20over
noun
- illegitimate cross-over 7, record 1, English, illegitimate%20cross%2Dover
noun
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
A recombinational event that involves recombining sites that are misaligned, and nonreciprocal recombinant chromosomes are formed as a result. 8, record 1, English, - unequal%20crossing%2Dover
Record number: 1, Textual support number: 1 CONT
Misalignment of homologous chromosomes during prophase I of meiosis can lead to unequal crossing over. Following an unequal crossing over event one of the resulting chromosomes will get an insertion and the other a deletion ... Thus, unequal crossing over is a ... mutation mechanism that causes insertions and deletions (in addition to replication slippage). Homologous chromosomes align due to sequence similarity, but misalignment may occur when the chromosomes carry non-homologous repeated sequences. 9, record 1, English, - unequal%20crossing%2Dover
Record 1, Key term(s)
- unequal crossover
- illegitimate crossover
- illegitimate cross over
Record 1, French
Record 1, Domaine(s)
- Génétique
Record 1, Main entry term, French
- enjambement inégal
1, record 1, French, enjambement%20in%C3%A9gal
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- crossing-over inégal 2, record 1, French, crossing%2Dover%20in%C3%A9gal
avoid, anglicism, masculine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
Pendant plusieurs décennies, il fut accepté que seuls trois mécanismes pouvaient expliquer l'apparition de nouveaux gènes dans un génome. Le plus simple, et le premier identifié, consiste en la duplication d'un gène par enjambement inégal («unequal crossing-over»), qui produit deux copies filles à partir d'un gène préexistant [...] À l'origine identiques, ces copies accumulent au cours de l'évolution des mutations qui entraînent peu à peu la divergence des séquences des protéines codées. 3, record 1, French, - enjambement%20in%C3%A9gal
Record number: 1, Textual support number: 1 OBS
enjambement : Échange de segments d'ADN qui se produit au cours de la méiose entre deux chromosomes homologues ou au cours d'une mitose entre deux chromosomes homologues ou non. 4, record 1, French, - enjambement%20in%C3%A9gal
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Genética
Record 1, Main entry term, Spanish
- sobrecruzamiento desigual
1, record 1, Spanish, sobrecruzamiento%20desigual
correct, masculine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
Record 1, Textual support, Spanish
Record number: 1, Textual support number: 1 DEF
Proceso meiótico anómalo, en el que una cromátida contiene una duplicación y la otra, una deleción. 1, record 1, Spanish, - sobrecruzamiento%20desigual
Record number: 1, Textual support number: 1 OBS
Se suele producir en regiones que contienen secuencias repetidas de ADN, donde es menor la precisión de la meiosis. 1, record 1, Spanish, - sobrecruzamiento%20desigual
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© Public Services and Procurement Canada, 2026
TERMIUM Plus®, the Government of Canada's terminology and linguistic data bank
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