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Abstract:

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.

Registro:

Documento: Artículo
Título:Revised karyotype of Alouatta caraya (Primates: Platyrrhini) based on synaptonemal complex and banding analyses
Autor:Mudry, M.D.; Rahn, M.; Gorostiaga, M.; Hick, A.; Merani, M.S.; Solari, A.J.
Filiación:GIBE, Depto. de Biología, Pabellón II, (1428) Bs. As., Argentina
CIR, Fac. de Medicina, UBA, Paraguay 2155. (1121) Bs. As., Argentina
GIBE, Depto. de Biologia, Pab. II, (1426) Buenos Aires, Argentina
Palabras clave: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
Año:1998
Volumen:128
Número:1
Página de inicio:9
Página de fin:16
Título revista:Hereditas
Título revista abreviado:Hereditas
ISSN:00180661
CODEN:HEREA
PDF:https://bibliotecadigital.exactas.uba.ar/download/paper/paper_00180661_v128_n1_p9_Mudry.pdf
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00180661_v128_n1_p9_Mudry

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Citas:

---------- APA ----------
Mudry, M.D., Rahn, M., Gorostiaga, M., Hick, A., Merani, M.S. & Solari, A.J. (1998) . Revised karyotype of Alouatta caraya (Primates: Platyrrhini) based on synaptonemal complex and banding analyses. Hereditas, 128(1), 9-16.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00180661_v128_n1_p9_Mudry [ ]
---------- CHICAGO ----------
Mudry, M.D., Rahn, M., Gorostiaga, M., Hick, A., Merani, M.S., Solari, A.J. "Revised karyotype of Alouatta caraya (Primates: Platyrrhini) based on synaptonemal complex and banding analyses" . Hereditas 128, no. 1 (1998) : 9-16.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00180661_v128_n1_p9_Mudry [ ]
---------- MLA ----------
Mudry, M.D., Rahn, M., Gorostiaga, M., Hick, A., Merani, M.S., Solari, A.J. "Revised karyotype of Alouatta caraya (Primates: Platyrrhini) based on synaptonemal complex and banding analyses" . Hereditas, vol. 128, no. 1, 1998, pp. 9-16.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00180661_v128_n1_p9_Mudry [ ]
---------- VANCOUVER ----------
Mudry, M.D., Rahn, M., Gorostiaga, M., Hick, A., Merani, M.S., Solari, A.J. Revised karyotype of Alouatta caraya (Primates: Platyrrhini) based on synaptonemal complex and banding analyses. Hereditas. 1998;128(1):9-16.
Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00180661_v128_n1_p9_Mudry [ ]