Population structure of modern-day Italians reveals patterns of ancient and archaic ancestries in Southern Europe.
Sci Adv
; 5(9): eaaw3492, 2019 09.
Article
em En
| MEDLINE
| ID: mdl-31517044
European populations display low genetic differentiation as the result of long-term blending of their ancient founding ancestries. However, it is unclear how the combination of ancient ancestries related to early foragers, Neolithic farmers, and Bronze Age nomadic pastoralists can explain the distribution of genetic variation across Europe. Populations in natural crossroads like the Italian peninsula are expected to recapitulate the continental diversity, but have been systematically understudied. Here, we characterize the ancestry profiles of Italian populations using a genome-wide dataset representative of modern and ancient samples from across Italy, Europe, and the rest of the world. Italian genomes capture several ancient signatures, including a non-steppe contribution derived ultimately from the Caucasus. Differences in ancestry composition, as the result of migration and admixture, have generated in Italy the largest degree of population structure detected so far in the continent, as well as shaping the amount of Neanderthal DNA in modern-day populations.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Genoma Humano
/
Bases de Dados Genéticas
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Deriva Genética
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População Branca
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DNA Antigo
Limite:
Animals
/
Humans
País/Região como assunto:
Europa
Idioma:
En
Ano de publicação:
2019
Tipo de documento:
Article