SNP-Based PC of 1,262 individuals from 10 sub-populations. 
<p>The Italian population plotted onto the first two principal components defined by the European HGDP-CEPH populations and CEU HapMap data. Scatter plot of the first two principal components, obtained using R software (prcomp). Analysis based on 125,799 autosomal SNPs.
</p><p><br></p>
The position of the Italian population samples suggests that genetic distances between these populations and other European and Middle East populations has a good correlation with geographic distances.
Cornelia Di Gaetano , Floriana Voglino, Simonetta Guarrera, Giovanni Fiorito, Fabio Rosa, Anna Maria Di Blasio, Paola Manzini, Irma Dianzani, Marta Betti, Daniele Cusi, Francesca Frau, Cristina Barlassina, Dario Mirabelli, Corrado Magnani, Nicola Glorioso, Stefano Bonassi, Alberto Piazza, Giuseppe Matullo
CC BY 2.5
Di Gaetano C, Voglino F, Guarrera S, Fiorito G, Rosa F, Di Blasio AM, et al. (2012) An Overview of the Genetic Structure within the Italian Population from Genome-Wide Data. PLoS ONE 7(9): e43759. doi:10.1371/journal.pone.0043759 <a rel="nofollow" class="external free" href="http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0043759">http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0043759</a>