Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 2 de 2
Filtrar
Mais filtros











Intervalo de ano de publicação
1.
Genet Mol Res ; 6(4): 1131-41, 2007 Dec 11.
Artigo em Inglês | MEDLINE | ID: mdl-18273807

RESUMO

The human genome has linkage disequilibrium (LD) blocks, within which single-nucleotide polymorphisms show strong association with each other. We examined data from the International HapMap Project to define LD blocks and to detect DNA sequence features inside of them. We used permutation tests to determine the empirical significance of the association of LD blocks with genes and Alu repeats. Very large LD blocks (>200 kb) have significantly higher gene coverage and Alu frequency than the outcome obtained from permutation-based simulation, whereas there was no significant positive correlation between gene density and block size. We also observed a reduced frequency of Alu repeats at the gaps between large LD blocks, indicating that their enrichment in large LD blocks does not introduce recombination hotspots that would cause these gaps.


Assuntos
Elementos Alu , Genoma Humano , Desequilíbrio de Ligação , Bases de Dados de Ácidos Nucleicos , Genética Populacional , Humanos , Modelos Genéticos , Polimorfismo de Nucleotídeo Único , Recombinação Genética
2.
Genet. mol. res. (Online) ; Genet. mol. res. (Online);6(4): 1131-1141, 2007. ilus, tab, graf
Artigo em Inglês | LILACS | ID: lil-520035

RESUMO

The human genome has linkage disequilibrium (LD) blocks, within which single-nucleotide polymorphisms show strong association with each other. We examined data from the International HapMap Project to define LD blocks and to detect DNA sequence features inside of them. We used permutation tests to determine the empirical significance of the association of LD blocks with genes and Alu repeats. Very large LD blocks (>200 kb) have significantly higher gene coverage and Alu frequency than the outcome obtained from permutation-based simulation, whereas there was no significant positive correlation between gene density and block size. We also observed a reduced frequency of Alu repeats at the gaps between large LD blocks, indicating that their enrichment in large LD blocks does not introduce recombination hotspots that would cause these gaps.


Assuntos
Humanos , Elementos Alu , Genoma Humano , Desequilíbrio de Ligação , Bases de Dados de Ácidos Nucleicos , Genética Populacional , Modelos Genéticos , Polimorfismo de Nucleotídeo Único , Recombinação Genética
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA