Platyrrhini
Mostrando 13-21 de 21 artigos, teses e dissertações.
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13. Divergent evolution and purifying selection of the H (FUT1) gene in New World monkeys (Primates, Platyrrhini)
In the present study, the coding region of the H gene was sequenced and analyzed in fourteen genera of New World primates (Alouatta, Aotus, Ateles, Brachyteles, Cacajao, Callicebus, Callithrix, Cebus, Chiropotes, Lagothrix, Leontopithecus, Pithecia, Saguinus, and Saimiri), in order to investigate the evolution of the gene. The analyses revealed that this cod
Genetics and Molecular Biology. Publicado em: 2004
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14. The prion protein and New World primate phylogeny
The PrP C prion protein contains 250 amino acids with some variation among species and is expressed in several cell types. PrP C is converted to PrP Sc by a post-translational process in which it acquires amino acid sequences of three-dimensional conformation of beta-sheets. Variations in the prion protein gene were observed among 16 genera of New World prim
Genetics and Molecular Biology. Publicado em: 2004
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15. Molecular studies of Callithrix pygmaea (Primates, Platyrrhini) based on transferrin intronic and ND1 regions: implications for taxonomy and conservation
As classificações tradicionais envolvendo os macacos da infraordem Platyrrhini, principalmente baseadas em características morfológicas, têm sido contestadas por dados moleculares recentes. A subfamília Callitrichinae (Platyrrhine, Primates) engloba um diverso grupo de espécies, muitas das quais consideradas em perigo de extinção. A presente anális
Genetics and Molecular Biology. Publicado em: 2000-12
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16. Primates. Part 3—Platyrrhini (Families Hapalidae and Callimiconidae)
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17. Living New World Monkeys (Platyrrhini). With an Introduction to Primates
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18. The structure of the vomeronasal organ and nasopalatine ducts in Aotus trivirgatus and some other primate species.
A vomeronasal organ and patent nasopalatine ducts were found in adult specimens of Aotus trivirgatus, Arctocebus calabarensis, Ateles geoffroyi and Saguinus fuscicollis. The vomeronasal complex appeared to be functional except in Ateles. However, the relative size of the organ in the Platyrrhini is much reduced compared to that in prosimians. The possible ro
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19. Z-DNA immunoreactivity in fixed metaphase chromosomes of primates.
Antibodies against Z-DNA bind to fixed metaphase chromosomes of man and Cebus albifrons (Platyrrhini, Primate). By indirect immunofluorescence and indirect immunoperoxidase techniques, a heavy staining is detected in some segments of chromosomes of C. albifrons. These segments correspond to R-band-positive heterochromatin, which has a high G + C-base content
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20. Segmental Duplications in Euchromatic Regions of Human Chromosome 5: A Source of Evolutionary Instability and Transcriptional Innovation
Recent analyses of the structure of pericentromeric and subtelomeric regions have revealed that these particular regions of human chromosomes are often composed of blocks of duplicated genomic segments that have been associated with rapid evolutionary turnover among the genomes of closely related primates. In the present study, we show that euchromatic regio
Cold Spring Harbor Laboratory Press.
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21. Reduction of two functional gamma-globin genes to one: an evolutionary trend in New World monkeys (infraorder Platyrrhini).
Nucleotide sequences were determined for the gamma1- and gamma2-globin loci from representatives of the seven anciently separated clades in the three extant platyrrhine families (Atelidae, Pitheciidae, and Cebidae). These sequences revealed an evolutionary trend in New World monkeys either to inactivate the gamma1 gene or to fuse it with the gamma2 gene, i.e