Global diversity, population stratification, and selection of human copy-number variation.
Science
; 349(6253): aab3761, 2015 09 11.
Article
em En
| MEDLINE
| ID: mdl-26249230
In order to explore the diversity and selective signatures of duplication and deletion human copy-number variants (CNVs), we sequenced 236 individuals from 125 distinct human populations. We observed that duplications exhibit fundamentally different population genetic and selective signatures than deletions and are more likely to be stratified between human populations. Through reconstruction of the ancestral human genome, we identify megabases of DNA lost in different human lineages and pinpoint large duplications that introgressed from the extinct Denisova lineage now found at high frequency exclusively in Oceanic populations. We find that the proportion of CNV base pairs to single-nucleotide-variant base pairs is greater among non-Africans than it is among African populations, but we conclude that this difference is likely due to unique aspects of non-African population history as opposed to differences in CNV load.
Texto completo:
1
Bases de dados:
MEDLINE
Assunto principal:
População
/
Genoma Humano
/
Deleção de Sequência
/
Evolução Molecular
/
Duplicação Gênica
/
Variações do Número de Cópias de DNA
Tipo de estudo:
Prognostic_studies
Limite:
Animals
/
Humans
Idioma:
En
Revista:
Science
Ano de publicação:
2015
Tipo de documento:
Article
País de afiliação:
Estados Unidos