997 resultados para chromosome 19


Relevância:

20.00% 20.00%

Publicador:

Resumo:

Référence bibliographique : Rol, 56882

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Référence bibliographique : Rol, 56883

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Référence bibliographique : Rol, 56812

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Référence bibliographique : Rol, 56807

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Genetic crosses in many organisms have shown that alleles of unlinked genes generally assort independently of one another during gamete formation. However, variation in chromosome size may affect the process of meiosis and lead to nonindependent assortment of chromosomes. We therefore examined chromosomes with insertions and found that they preferentially segregated away from the X chromosome during meiosis in Caenorhabditis elegans males. Conversely, chromosomes with deletions preferentially segregated with the X chromosome. The degree of segregation bias was significantly associated with the length of the insertion or deletion. Simulations revealed that this segregation bias leads to genome size reduction in hermaphroditic species, a pattern consistent with differences in genome sizes in the genus Caenorhabditis. These results suggest that insertions and deletions may affect chromosome segregation patterns.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Référence bibliographique : Rol, 54249

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Référence bibliographique : Rol, 54248