Nucleolus organizer regions in Physalaemus cuvieri (Anura, Leptodactylidae), with evidence of a unique case of Ag-NOR variability
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Wiley-Blackwell
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We studied ten specimens of Physalaemus cuvieri collected at different localities in Brazil using conventional staining and banding techniques. All specimens had 2n = 22. There were karyotypic variants: distinct patterns in the number and chromosome localization of Ag-NORs as well as in the corresponding secondary constrictions. Preliminary C-banding patterns obtained for specimens From two localities are also suggestive of karyotypic differentiation in P. cuvieri.
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Hereditas. Malden: Wiley-blackwell, v. 131, n. 2, p. 135-141, 1999.
