Fig. 3: The heatmap and network visualization of IBD sharing across SEA, East Asian and South Asian populations. | Communications Biology

Fig. 3: The heatmap and network visualization of IBD sharing across SEA, East Asian and South Asian populations.

From: Exploring the genomic population structure and history of Austroasiatic speakers in Mainland Southeast Asia

Fig. 3: The heatmap and network visualization of IBD sharing across SEA, East Asian and South Asian populations.The alternative text for this image may have been generated using AI.

The identified IBD blocks were categorized into the range of 1 to 3 cM, 3 to 5 cM, 5 to 10 cM and over 10 cM, in SEA, South Asian and East Asian populations. Populations are color-coded based on their language familes. a−d Corresponding heatmaps showing pairwise IBD sharing among populations (n = 86) for each segment length category. For each pair of populations, we plot the fraction of all pairs of individuals that share at least one IBD block in the size range, which we obtained by dividing the total number of pairs that share such IBD segments by the total number of all possible pairs. e,f Network visualizations for the 5 to 10 cM (n = 88 populations) and over 10 cM (n = 82 populations) categories. In these networks, populations are clustered based on their normalized IBD sharing fraction; populations with higher IBD sharing are located closer to each other.

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