Ancestral Karyotype
Mostrando 1-12 de 18 artigos, teses e dissertações.
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1. Comparative cytogenetics in three Melipona species (Hymenoptera: Apidae) with two divergent heterochromatic patterns
Abstract The genus Melipona is subdivided into four subgenera based on morphological characteristics, and two groups based on cytogenetic patterns. The cytogenetic information on this genus is still scarce, therefore, the goal of this study was to characterize Melipona paraensis, Melipona puncticollis, and Melipona seminigra pernigra using the following tech
Genet. Mol. Biol.. Publicado em: 29/11/2018
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2. Identifying Mazama gouazoubira (Artiodactyla; Cervidae) chromosomes involved in rearrangements induced by doxorubicin
Abstract The process of karyotype evolution in Cervidae from a common ancestor (2n = 70, FN = 70) has been marked by complex chromosomal rearrangements. This ancestral karyotype has been retained by the current species Mazama gouazoubira (Fischer 1814), for which a chromosomal polymorphism (Robertsonian translocations and the presence of B chromosomes) has b
Genet. Mol. Biol.. Publicado em: 05/06/2017
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3. Karyotypic evolution of ribosomal sites in buffalo subspecies and their crossbreed
Domestic buffaloes are divided into two group based on cytogenetic characteristics and habitats: the "river buffaloes" with 2n = 50 and the "swamp buffaloes", 2n = 48. Nevertheless, their hybrids are viable, fertile and identified by a 2n = 49. In order to have a better characterization of these different cytotypes of buffaloes, and considering that NOR-bear
Genet. Mol. Biol.. Publicado em: 2014-06
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4. Diversidade em Psidium guajava L. por caracteres morfológicos, moleculares e citogenéticos / Diversity in Psidium guajava L. by morphological, molecular and cytogenetics
Guava (Psidium guajava L.) is one of the most economically important fruit crop from Myrtaceae family. Brazil is one of the largest producers of guava in the world, which is a potential crop in growth and profitability. Cross-pollination of the species and the existence of heterogeneous seminal propagation orchards result in variability, allowing the selecti
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/07/2012
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5. Sex chromosome system ZZ/ZW in Apareiodon hasemani Eigenmann, 1916 (Characiformes, Parodontidae) and a derived chromosomal region
Parodontidae fish show few morphological characteristics for the identification of their representatives and chromosomal analyses have provided reliable features for determining the interrelationships in this family. In this study, the chromosomes of Apareiodon hasemani from the São Francisco River basin, Brazil, were analyzed and showed a karyotype with 2n
Genet. Mol. Biol.. Publicado em: 13/11/2012
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6. Estudos cromossômicos e moleculares em espécies de lagartos microteídeos, com ênfase na tribo Ecpleopodini (Gymnophthalmidae, Squamata) / Chromossomal and molecular studies on species of microteiid lizards, with emphasis on Ecpleopodini (Gymnophthalmidae, Squamata)
This study contributes to knowledge of the family Gymnophthalmidae, adding new genetic data of three genes for the tribe Ecpleopodini and description of 11 new karyotype for the family, belonging to the tribes Ecpleopodini, Heterodactylini, Iphisiini and Gymnophthalmini. Phylogenetic analysis for the tribe Gymnophthalmini aimed to investigate the position of
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/06/2011
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7. Cytogenetics studies in Brazilian species of Pseudophyllinae (Orthoptera: Tettigoniidae): 2n(♂)=35 and fn=35 the probable basic and ancestral karyotype of the family tettigoniidae
The karyotypes of five species of Brazilian Pseudophyllinae belonging to four tribes were here studied. The data available in the literature altogether with those obtained with species in here studied allowed us to infer that 2n(♂)=35 is the highest chromosome number found in the family Tettigoniidae and that it is present in species belonging to Pseudophy
Neotropical Entomology. Publicado em: 2010-08
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8. Mammalian chromosome evolution: comparative studies by chromosome painting on two sloth species of Bradypodidae family and two marsupial species / Evolução cromossômica em mamíferos: estudos comparativos por pintura cromossômica em duas espécies de preguiças da família Bradypodidae e em duas espécies de marsupiais da família Didelphidae
In an attempt to shed additional light on mammalian karyotype evolution, we studied, by chromosome painting, the chromosomes of species from two mammalian basal groups, sloths and marsupials. We compared human chromosomes with the chromosomes of two species of three-toed sloths, Bradypus torquatus and Bradypus variegatus, establishing homologies. Analyzing t
Publicado em: 2009
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9. Chromosome evolution: Karyotype variability in Platyrrhini and studies of sinteny and homologies between human chromosomes / Evolução cromossômica: estudo da variabilidade cariotípica em Platyrrhini e das homeologias e sintenias com cromossomos humanos
We studied the karyotypes of Brazilian monkeys (Platyrrhini, Primates) using both traditional cytogenetic techniques as well as FISH. FISH analysis employed human probes for chromosome 14, 15 and the X chromosome and a probe of the Y chromosome of Brachyteles arachnoides obtained by chromosome microdissection. Twenty-four individuals of Alouatta guariba clam
Publicado em: 2008
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10. Karyotype relationships among Anastrepha bistrigata, A. striata and A. serpentina (Diptera, Tephritidae)
The species of Anastrepha are arranged into 17 intrageneric groups. Recently, it was proposed that two species of the striata group, Anastrepha striata and A. bistrigata, might be realocated to serpentina group. Anastrepha bistrigata and A. serpentina have an X1X2Y/X1X1 X2X2 sex chromosome system while A. striata has a XY/XX system. It was previously propose
Genetics and Molecular Biology. Publicado em: 2007
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11. Karyotype characterization of Trigona fulviventris Guérin, 1835 (Hymenoptera, Meliponini) by C banding and fluorochrome staining: report of a new chromosome number in the genus
Although many species of the genus Trigona have been taxonomically described, cytogenetic studies of these species are still rare. The aim of the present study was to obtain cytogenetic data by conventional staining, C banding and fluorochrome staining for the karyotype characterization of the species Trigona fulviventris. Cytogenetic analysis revealed that
Genetics and Molecular Biology. Publicado em: 2005-09
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12. Citogenetica comparativa de especies de aplastodiscus e do grupo de Hyla albomarginata (Hylidae, Anura) / Comparative cytogenetics of aplastodiscus species and Hyla albomarginata group (Hylidae, Anura)
The Hylidae family includes four subfamilies, with Hylinae comprising 27 genera. The Hyla genus has many species divided into related groups. The Hyla albomarginata group, as known as "green Hylas" is subdivided into 3 complexes: "albomarginata","albosignata" and "albofrenata". The Aplastodiscus genus has been the object oftaxonomic discussion since its desc
Publicado em: 2005