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Abstract:

The chromosome complement of Belostoma bifoveolatum, B. dentatum, B. elegans, and B. martini were analyzed by C‐banding and DNA content. The four species share a similar karyotype with 26 + X1X2Y chromosomes (♂) and an equilocal distribution of C‐bands at telomeric regions. The relative amount of C‐banded material varies between 24 % in B. martini to approximately 59 % in the other three species. The DNA content differs significantly among all of them, and no clear correlation is found between DNA content and C‐positive heterochromatin. The karyotype variation detected in this study suggests that several chromosomal changes took place during the evolution of the Belostomatidae, involving C‐positive heterochromatin as well as C‐negative chromatin. It is also suggested that a telomeric pattern of heterochromatin distribution is a common feature of heteropteran chromosomes, and it is probably related to their holokinetic nature. © 1991 Mendelian Society of Lund

Registro:

Documento: Artículo
Título:DNA content and heterochromatin variation in species of Belostoma (Heteroptera, Belostomatidae)
Autor:Papeschi, A.G.
Filiación:FCEN, UBA, Norte, Buenos Aires, Argentina
Palabras clave:animal cell; article; chromosome polymorphism; dna content; evolution; genetic variability; heterochromatin; insect; karyotype; nonhuman
Año:1991
Volumen:115
Número:2
Página de inicio:109
Página de fin:114
DOI: http://dx.doi.org/10.1111/j.1601-5223.1991.tb03543.x
Título revista:Hereditas
Título revista abreviado:Hereditas
ISSN:00180661
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00180661_v115_n2_p109_Papeschi

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Citas:

---------- APA ----------
(1991) . DNA content and heterochromatin variation in species of Belostoma (Heteroptera, Belostomatidae). Hereditas, 115(2), 109-114.
http://dx.doi.org/10.1111/j.1601-5223.1991.tb03543.x
---------- CHICAGO ----------
Papeschi, A.G. "DNA content and heterochromatin variation in species of Belostoma (Heteroptera, Belostomatidae)" . Hereditas 115, no. 2 (1991) : 109-114.
http://dx.doi.org/10.1111/j.1601-5223.1991.tb03543.x
---------- MLA ----------
Papeschi, A.G. "DNA content and heterochromatin variation in species of Belostoma (Heteroptera, Belostomatidae)" . Hereditas, vol. 115, no. 2, 1991, pp. 109-114.
http://dx.doi.org/10.1111/j.1601-5223.1991.tb03543.x
---------- VANCOUVER ----------
Papeschi, A.G. DNA content and heterochromatin variation in species of Belostoma (Heteroptera, Belostomatidae). Hereditas. 1991;115(2):109-114.
http://dx.doi.org/10.1111/j.1601-5223.1991.tb03543.x