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Fine structure and meiotic behaviour of the male multiple sex chromosomes in the genus Alouatta.
- Source :
-
Cytogenetic and genome research [Cytogenet Genome Res] 2005; Vol. 108 (1-3), pp. 262-7. - Publication Year :
- 2005
-
Abstract
- The meiotic cytology and fine structure of the sex multiples in males from two species of the genus Alouatta are presented and compared with descriptions from other species of this genus. As shown in pachytene by synaptonemal complex analysis and in metaphase I by spreading, there is a quadrivalent in male meiosis in A. caraya, which is formed by an X(1)X(2)Y(1)Y(2) complex, while in A. palliata there is a trivalent formed by an X(1)X(2)Y(1) complex. Chromosome painting with human probes shows that A. caraya sex multiples share the same components as those of A. seniculus sara and A. seniculus arctoidea. However, as shown here for A. palliata and by others in A. fusca, there are differences among the multiples of some species. It is shown that in this genus there are several varieties of sex multiples that share some features, and that the origin of these multiples is most probably a primitive development in the genus Alouatta.
- Subjects :
- Animals
Chromosome Banding methods
Chromosomes, Mammalian chemistry
Chromosomes, Mammalian genetics
Evolution, Molecular
Genetic Variation genetics
Karyotyping
Lymphocytes chemistry
Lymphocytes metabolism
Male
Metaphase genetics
Microscopy, Electron methods
Mitosis genetics
Species Specificity
Spermatocytes chemistry
Spermatocytes metabolism
Spermatocytes ultrastructure
Synaptonemal Complex genetics
Alouatta genetics
Meiosis genetics
Sex Chromosomes chemistry
Sex Chromosomes genetics
Subjects
Details
- Language :
- English
- ISSN :
- 1424-859X
- Volume :
- 108
- Issue :
- 1-3
- Database :
- MEDLINE
- Journal :
- Cytogenetic and genome research
- Publication Type :
- Academic Journal
- Accession number :
- 15545739
- Full Text :
- https://doi.org/10.1159/000080825