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X-INACTIVATION [1 record]
Record 1 - internal organization data 2008-10-02
Record 1, English
Record 1, Subject field(s)
- Genetics
Record 1, Main entry term, English
- X-inactivation
1, record 1, English, X%2Dinactivation
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- X-chromosome inactivation 2, record 1, English, X%2Dchromosome%20inactivation
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
A process in which one of the two X chromosomes in females undergoes heterochromatization in diploid cells, resulting in its [repression]. 2, record 1, English, - X%2Dinactivation
Record number: 1, Textual support number: 1 OBS
In mammals, the X chromosome undergoing the inactivation event is a random choice from one cell to another. 3, record 1, English, - X%2Dinactivation
Record number: 1, Textual support number: 2 OBS
Once an X chromosome has been inactivated, it remains inactivated in the daughter cells derived from the original cell. 3, record 1, English, - X%2Dinactivation
Record 1, French
Record 1, Domaine(s)
- Génétique
Record 1, Main entry term, French
- inactivation de l'X
1, record 1, French, inactivation%20de%20l%27X
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- inactivation du chromosome X 2, record 1, French, inactivation%20du%20chromosome%20X
correct, feminine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Phénomène complexe qui fait que l'un des deux chromosomes X est inactivé dans les cellules d'un organisme féminin. 2, record 1, French, - inactivation%20de%20l%27X
Record number: 1, Textual support number: 1 CONT
Chez les mammifères, l'existence de chromosomes sexuels de taille différente aurait pu être à l'origine d'une injustice génétique. Le chromosome Y qui caractérise les mâles est de petite taille et contient beaucoup moins de gènes que le chromosome X. Mais un processus ayant lieu très tôt au cours de l'embryogénèse chez les femelles - l'inactivation de l'X - permet de rétablir la parité génétique. 1, record 1, French, - inactivation%20de%20l%27X
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Genética
Record 1, Main entry term, Spanish
- inactivación
1, record 1, Spanish, inactivaci%C3%B3n
correct, feminine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
Record 1, Textual support, Spanish
Record number: 1, Textual support number: 1 CONT
En Drosphila melanogaster no se produce la inactivación de uno de los dos cromosomas X de las hembras al azar, mientras que en las ratonas sí tiene lugar la inactivación. 1, record 1, Spanish, - inactivaci%C3%B3n
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