Artículo
Meiosis and Chromosome Painting of Sex Chromosome Systems in Ceboidea
Fecha de publicación:
02/2001
Editorial:
Wiley-liss, div John Wiley & Sons Inc.
Revista:
American Journal Of Primatology
ISSN:
0275-2565
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The identity of the chromosomes involved in the multiple sex system of Alouatta caraya (Aca) and the possible distribution of this system among other Ceboidea were investigated by chromosome painting of mitotic cells from five species and by analysis of meiosis at pachytene in two species. The identity of the autosome #7 (X2) involved in the multiple system of Aca and its breakage points were demonstrated by both meiosis and chromosome painting. These features are identical to those described by Consigliere et al. [1996] in Alouatta seniculus sara (Assa) and Alouatta seniculus arctoidea (Asar). This multiple system was absent in the other four Ceboidea species studied here. However, data from the literature strongly suggest the presence of this multiple in other members of this genus. The presence of this multiple system among several species and subspecies that show high levels of chromosome rearrangements may suggest a special selective value of this multiple. The meiotic features of the sex systems of Aca and Cebus apella paraguayanus (Cap) are strikingly different at pachytene, as the latter system is similar to the sex pair of man and other primates. The relatively large genetic distances between species presently showing this multiple system suggest that its origin is not recent. Other members of the same genus should be investigated at meiosis and by chromosome painting in order to know the extent and distribution of this complex sex-chromosome system.
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Articulos(IEGEBA)
Articulos de INSTITUTO DE ECOLOGIA, GENETICA Y EVOLUCION DE BS. AS
Articulos de INSTITUTO DE ECOLOGIA, GENETICA Y EVOLUCION DE BS. AS
Articulos(INBIOMED)
Articulos de INSTITUTO DE INVESTIGACIONES BIOMEDICAS
Articulos de INSTITUTO DE INVESTIGACIONES BIOMEDICAS
Citación
Mudry, Marta Dolores; Rahn, Irene Monica; Solari, Alberto Juan; Meiosis and Chromosome Painting of Sex Chromosome Systems in Ceboidea; Wiley-liss, div John Wiley & Sons Inc.; American Journal Of Primatology; 54; 2; 2-2001; 65-78
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