Results 21 to 30 of about 2,921 (283)
Non-random distribution of microsatellite motifs and (TTAGGG)n repeats in the monkey frog Pithecopus rusticus (Anura, Phyllomedusidae) karyotype [PDF]
The monkey frog, Pithecopus rusticus (Anura, Phyllomedusidae) is endemic to the grasslands of the Araucarias Plateau, southern Brazil. This species is known only from a small population found at the type locality. Here, we analyzed for the first time the
Julia R. Ernetti +4 more
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Exfoliative Cytology in the Oral Mucosa of Patients with Fanconi Anaemia: A Morphometric Approach
Patients with Fanconi anaemia (FA) are prone to develop squamous cell carcinomas at an early age. Exfoliative cytology can be used to detect changes to the health of the oral mucosa.
Maria Angela Naval Machado +5 more
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The history of rDNA research started almost 90 years ago when the geneticist, Barbara McClintock observed that in interphase nuclei of maize the nucleolus was formed in association with a specific region normally located near the end of a chromosome ...
Vera Hemleben +4 more
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Chromosomal characterization of Hyla bischoffi and Hyla guentheri (Anura, Hylidae) [PDF]
Hyla bischoffi and H. guentheri share some morphological and call characters with the H. pulchella and H. polytaenia groups. The inclusion of these two species in one of these two groups is still controversial. This study showed that both species have 2n
Simone C. Raber +4 more
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Species of the subtribe Oedionychina not only have a highly uniform diploid number of 2n = 22 (20+X+y) but have the karyotypic peculiarity of possessing extremely large sex chromosomes.
Mara Cristina de Almeida +2 more
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Background: The nucleolar organizer region (NOR) is by definition part of a chromosome, and nucleolus is a structure containing this chromosomal part and in addition the material which accumulate around the NOR, mostly rRNAs and their precursors as well ...
Bhavana Gupta +3 more
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Cytogenetic characterization of Hypostomus nigromaculatus (Siluriformes: Loricariidae)
Hypostomus is the most speciose genus in the family Loricariidae, with approximately 120 species. These fish show a wide morphological and color variation, which hinders the identification of species, mainly of widely distributed representatives. The aim
Marceléia Rubert +2 more
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Cytogenetic studies in four cultivated Amaranthus (Amaranthaceae) species
In the present study, the chromosomes numbers were confirmed, 2n = 34 for Amaranthus cruentus Linnaeus, 1759, and 2n = 32 for A. hypochondriacus Linnaeus, 1753, A. mantegazzianus Passer, 1864, and A. caudatus Linnaeus, 1753.
Marisa Bonasora +2 more
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Cytogenetic studies were performed on two sympatric species of Characidium, C. gomesi and C. cf. zebra, from the Grande River basin, Minas Gerais State, Brazil.
Alexandre Rodrigues da Silva +1 more
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Revisiting the polyploidy in the genus Odontophrynus (Anura: Odontophrynidae)
The genus Odontophrynus, composed of ten species, is found in practically the entire south of South America. Odontophrynus americanus was the first vertebrate registered to present natural polyploidy, considering that most individuals have 2N = 4x = 44 ...
André Luis de Souza +3 more
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