Dendrogram based on differences in food preferences between populations.

<p>Three groups are clear from the dendrogram: one composed by Georgia, the second one by Uzbekistan Kazakhstan and Azerbaijan and the third one by Armenia and Tajikistan.</p

Distribution of TAS2R38 haplotype by sex and population.

<p>Distribution of TAS2R38 haplotype by sex and population.</p

Mantel test results between distance matrices analyzed.

<p>In bold are reported significant correlations.</p

Distribution of PROP phenotype by sex and population.

<p>NT = non taster, MT = medium taster, ST = super taster.</p

Correspondence analysis between taster status and country.

<p>Correspondence Analysis between taster status and country shows the relationship between them. In particular, super taster status corresponds to Armenia and Tajikistan populations, non taster status to Georgia and medium taster status to Azerbaijan, Kazakhstan and Uzbekistan. Circles and triangles represent the country and the PROP status respectively. NT = non taster, MT = medium taster, ST = super taster. Country accounted for the majority (87.3%) of variance and taster status accounted for 12.7% of variance in the model.</p

Populations along the Silk Road.

<p>Populations analysed (linked by dashed line), their geographical location and sample size.</p

Distribution of Linkage Disequilibrium on chromosome 22.

<p>Average D' (A) and r² (B) coefficients plotted in 0.5 Megabases sliding windows (0.25 Mb overlap).</p

For each village we report resident population size, average village kinship values, number of samples and its average kinship values.

<p>For each village we report resident population size, average village kinship values, number of samples and its average kinship values.</p

Factor Correspondence Analysis comparing different individuals from different Ogliastra villages, performed with 5,192 SNPs.

<p>Each individual is represented by a circular shape, and the different 8 communities are marked with different colours. The two plots represented factor 1 and 2 and factor 1 and 3. (A1, A2) Analysis performed with 8 communities; (B1, B2) Analysis performed with 6 communities, without Talana and Urzulei.</p

Endogamy (values in %) in the Ogliastra villages from 1676 to 1975.

<p>Endogamy (values in %) in the Ogliastra villages from 1676 to 1975.</p