Marker Chromosomes
Mostrando 1-12 de 334 artigos, teses e dissertações.
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1. Telomere length: biological marker of cellular vitality, aging, and health-disease process
SUMMARY The aging process occurs due to the decline of vital physiological functions and adaptability of the body, being influenced by genetics and lifestyle. With advances in genetics, biological aging can be calculated by telomere length. Telomeres are regions at the ends of chromosomes that play a role in the maintenance and integrity of DNA. With biologi
Rev. Assoc. Med. Bras.. Publicado em: 2021-02
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2. Cytogenetic markers as tools in delimiting species of the highly diverse Neotropical fish Bryconamericus (Characiformes: Characidae)
RESUMO Bryconamericus é um grupo altamente diverso de caracídeos, sendo a citogenética uma valiosa ferramenta para a delimitação de espécies. Bryconamericus aff. iheringii (Alto Uruguai/Baixo Paraná), B. coeruleus (Alto Paraná), B. cf. ecai e B. cf. eigenmanni (Alto Uruguai) foram estudados citogeneticamente, e apresentaram 2n=52 cromossomos, com var
Neotrop. ichthyol.. Publicado em: 23/09/2019
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3. Gene expression analysis reveals important pathways for drought response in leaves and roots of a wheat cultivar adapted to rainfed cropping in the Cerrado biome
Abstract Drought limits wheat production in the Brazilian Cerrado biome. In order to search for candidate genes associated to the response to water deficit, we analyzed the gene expression profiles, under severe drought stress, in roots and leaves of the cultivar MGS1 Aliança, a well-adapted cultivar to the Cerrado. A set of 4,422 candidate genes was found
Genet. Mol. Biol.. Publicado em: 20/10/2016
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4. Heterochromatin base pair composition and diversification in holocentric chromosomes of kissing bugs (Hemiptera, Reduviidae)
The subfamily Triatominae (Hemiptera, Reduviidae) includes 150 species of blood-sucking insects, vectors of Chagas disease or American trypanosomiasis. Karyotypic information reveals a striking stability in the number of autosomes. However, this group shows substantial variability in genome size, the amount and distribution of C-heterochromatin, and the chro
Mem. Inst. Oswaldo Cruz. Publicado em: 2016-10
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5. Assessment of genetic diversity in Brazilian barley using SSR markers
Abstract Barley is a major cereal grown widely and used in several food products, beverage production and animal fodder. Genetic diversity is a key component in breeding programs. We have analyzed the genetic diversity of barley accessions using microsatellite markers. The accessions were composed of wild and domesticated barley representing genotypes from s
Genet. Mol. Biol.. Publicado em: 2016-03
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6. Chromosomal divergence and evolutionary inferences in Rhodniini based on the chromosomal location of ribosomal genes
In this study, we used fluorescence in situ hybridisation to determine the chromosomal location of 45S rDNA clusters in 10 species of the tribe Rhodniini (Hemiptera: Reduviidae: Triatominae). The results showed striking inter and intraspecific variability, with the location of the rDNA clusters restricted to sex chromosomes with two patterns: either on one
Mem. Inst. Oswaldo Cruz. Publicado em: 2013-05
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7. Fine mapping and single nucleotide polymorphism effects estimation on pig chromosomes 1, 4, 7, 8, 17 and X
Fine mapping of quantitative trait loci (QTL) from previous linkage studies was performed on pig chromosomes 1, 4, 7, 8, 17, and X which were known to harbor QTL. Traits were divided into: growth performance, carcass, internal organs, cut yields, and meat quality. Fifty families were used of a F2 population produced by crossing local Brazilian Piau boars wit
Genet. Mol. Biol.. Publicado em: 2013
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8. Sequence characterization, in silico mapping and cytosine methylation analysis of markers linked to apospory in Paspalum notatum
In previous studies we reported the identification of several AFLP, RAPD and RFLP molecular markers linked to apospory in Paspalum notatum. The objective of this work was to sequence these markers, obtain their flanking regions by chromosome walking and perform an in silico mapping analysis in rice and maize. The methylation status of two apospory-related se
Genet. Mol. Biol.. Publicado em: 09/11/2012
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9. Demarcation of informative chromosomes in tropical sweet corn inbred lines using microsatellite DNA markers
A study of genetic variation among 10 pairs of chromosomes extracted from 13 tropical sweet corn inbred lines, using 99 microsatellite markers, revealed a wide range of genetic diversity. Allelic richness and the number of effective alleles per chromosome ranged from 2.78 to 4.33 and 1.96 to 3.47, respectively, with respective mean values of 3.62 and 2.73. A
Genetics and Molecular Biology. Publicado em: 2012
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10. Estudos citogenéticos em espécies das tribos Hypostomini e Ancistrini (Loricariidae, Hypostominae)
Conventional and molecular cytogenetic analysis were performed on 15 species of the subfamily Hypostominae, comprising 12 species of the Hypostomini tribe, genus Hypostomus, and three of the Ancistrini tribe, genera Ancistrus and Hemiancistrus. The chromosome number of 2n=52 was observed for Ancistrus multispinis (14m+14sm+24st-a), A. brevipinnis (14m+14sm+2
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/09/2011
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11. Mapping of quantitative trait loci for thermosensitive genic male sterility in indica rice.
The objective of this work was to select and use microsatellite markers, to map genomic regions associated with the genetic control of thermosensitive genic male sterility (TGMS) in rice. An F2 population, derived from the cross between fertile and TGMS indica lines, was used to construct a microsatellite-based genetic map of rice. The TGMS phenotype showed
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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12. Mapeamento genético de cana-de-açúcar (Saccharum spp.) por associação empregando marcadores SSR e AFLP / Genetic mapping of sugar cane (Saccharum spp.) by association using SSR and AFLP markers
A cultura da cana-de-açúcar (Saccharum spp.) possui uma importância histórica e econômica para o Brasil. O agronegócio sucroalcooleiro vem experimentando forte expansão na última década não só no Brasil como também em todo o mundo em função, principalmente, da demanda por fontes de energia menos agressivas ao ambiente. Para atender a uma maior
Publicado em: 2011