Revised karyotype of Alouatta caraya (Primates: Platyrrhini) based on synaptonemal complex and banding analyses

Most primates studied have the usual XX/XY sex-chromosome system. However, exceptions to this rule among howler monkeys have been suggested by several authors. Recently a quadrivalent was discovered in male meiosis of Alouatta caraya and it was established that this species has an X1X2Y1Y2 sex chrom...

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Autores principales:	Mudry, Marta Dolores, Gorostiaga, María A.
Publicado:	1998
Materias:	article autosome chromosome banding pattern chromosome C band chromosome G band female karyotype male meiosis monkey nonhuman reciprocal chromosome translocation sex chromosome synaptonemal complex Alouatta Animals Chromosome Banding Karyotyping Male Spermatocytes Synaptonemal Complex Alouatta caraya Platyrrhini Primates
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00180661_v128_n1_p9_Mudry http://hdl.handle.net/20.500.12110/paper_00180661_v128_n1_p9_Mudry
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00180661_v128_n1_p9_Mudry
record_format	dspace
spelling	paper:paper_00180661_v128_n1_p9_Mudry2023-06-08T14:39:14Z Revised karyotype of Alouatta caraya (Primates: Platyrrhini) based on synaptonemal complex and banding analyses Mudry, Marta Dolores Gorostiaga, María A. article autosome chromosome banding pattern chromosome C band chromosome G band female karyotype male meiosis monkey nonhuman reciprocal chromosome translocation sex chromosome synaptonemal complex Alouatta Animals Chromosome Banding Karyotyping Male Spermatocytes Synaptonemal Complex Alouatta Alouatta caraya Platyrrhini Primates Most primates studied have the usual XX/XY sex-chromosome system. However, exceptions to this rule among howler monkeys have been suggested by several authors. Recently a quadrivalent was discovered in male meiosis of Alouatta caraya and it was established that this species has an X1X2Y1Y2 sex chromosome system. On that basis, a cytogenetic analysis of 25 males of this species is described. showing the corrected karyotype of this species. Each chromosome involved in the particular sex-chromosome system of this species is identified on the basis of mitotic chromosome measurements. G and C-banding patterns as well as on the relative measurements of synaptonemal complexes. It is now established that A. caraya has a karyotype with 2n = 52 in both sexes, and that the male one shows a single autosome 7 (X2) besides the X (X1) and the two products of the reciprocal translocation between the second autosome #7 and the Y chromosome (Y1 and Y2), while females show a homomorphic pair #7 (X2) and a pair of X1. The evolutionary implications of the exceptional primate species having composite sex-chromosome systems are discussed. Fil:Mudry, M.D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Gorostiaga, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1998 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00180661_v128_n1_p9_Mudry http://hdl.handle.net/20.500.12110/paper_00180661_v128_n1_p9_Mudry
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	article autosome chromosome banding pattern chromosome C band chromosome G band female karyotype male meiosis monkey nonhuman reciprocal chromosome translocation sex chromosome synaptonemal complex Alouatta Animals Chromosome Banding Karyotyping Male Spermatocytes Synaptonemal Complex Alouatta Alouatta caraya Platyrrhini Primates
spellingShingle	article autosome chromosome banding pattern chromosome C band chromosome G band female karyotype male meiosis monkey nonhuman reciprocal chromosome translocation sex chromosome synaptonemal complex Alouatta Animals Chromosome Banding Karyotyping Male Spermatocytes Synaptonemal Complex Alouatta Alouatta caraya Platyrrhini Primates Mudry, Marta Dolores Gorostiaga, María A. Revised karyotype of Alouatta caraya (Primates: Platyrrhini) based on synaptonemal complex and banding analyses
topic_facet	article autosome chromosome banding pattern chromosome C band chromosome G band female karyotype male meiosis monkey nonhuman reciprocal chromosome translocation sex chromosome synaptonemal complex Alouatta Animals Chromosome Banding Karyotyping Male Spermatocytes Synaptonemal Complex Alouatta Alouatta caraya Platyrrhini Primates
description	Most primates studied have the usual XX/XY sex-chromosome system. However, exceptions to this rule among howler monkeys have been suggested by several authors. Recently a quadrivalent was discovered in male meiosis of Alouatta caraya and it was established that this species has an X1X2Y1Y2 sex chromosome system. On that basis, a cytogenetic analysis of 25 males of this species is described. showing the corrected karyotype of this species. Each chromosome involved in the particular sex-chromosome system of this species is identified on the basis of mitotic chromosome measurements. G and C-banding patterns as well as on the relative measurements of synaptonemal complexes. It is now established that A. caraya has a karyotype with 2n = 52 in both sexes, and that the male one shows a single autosome 7 (X2) besides the X (X1) and the two products of the reciprocal translocation between the second autosome #7 and the Y chromosome (Y1 and Y2), while females show a homomorphic pair #7 (X2) and a pair of X1. The evolutionary implications of the exceptional primate species having composite sex-chromosome systems are discussed.
author	Mudry, Marta Dolores Gorostiaga, María A.
author_facet	Mudry, Marta Dolores Gorostiaga, María A.
author_sort	Mudry, Marta Dolores
title	Revised karyotype of Alouatta caraya (Primates: Platyrrhini) based on synaptonemal complex and banding analyses
title_short	Revised karyotype of Alouatta caraya (Primates: Platyrrhini) based on synaptonemal complex and banding analyses
title_full	Revised karyotype of Alouatta caraya (Primates: Platyrrhini) based on synaptonemal complex and banding analyses
title_fullStr	Revised karyotype of Alouatta caraya (Primates: Platyrrhini) based on synaptonemal complex and banding analyses
title_full_unstemmed	Revised karyotype of Alouatta caraya (Primates: Platyrrhini) based on synaptonemal complex and banding analyses
title_sort	revised karyotype of alouatta caraya (primates: platyrrhini) based on synaptonemal complex and banding analyses
publishDate	1998
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00180661_v128_n1_p9_Mudry http://hdl.handle.net/20.500.12110/paper_00180661_v128_n1_p9_Mudry
work_keys_str_mv	AT mudrymartadolores revisedkaryotypeofalouattacarayaprimatesplatyrrhinibasedonsynaptonemalcomplexandbandinganalyses AT gorostiagamariaa revisedkaryotypeofalouattacarayaprimatesplatyrrhinibasedonsynaptonemalcomplexandbandinganalyses
_version_	1768544534273196032

Revised karyotype of Alouatta caraya (Primates: Platyrrhini) based on synaptonemal complex and banding analyses

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