Xavier Dallaire
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xdallaire.bsky.social
Xavier Dallaire
@xdallaire.bsky.social
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PhD student exploring Arctic Char genomics at Université Laval, QC. Passionate about maps and data viz 🏳️‍🌈🗺️🧬
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xdallaire.bsky.social
New #phylogeography preprint is out, just in time for the holidays! Here we explore glacial lineages, mito-nuclear discordance and local ancestry tract detection using low-coverage WGS (2X), all in Arctic Char of course! 🐟🏔️ @jeansebmoore.bsky.social @michaelmhansen.bsky.social #PopGen
Local ancestry inferred through local PCA. Fig. 5 on the manuscript : Representative case of a low-recombining diverged putative haploblock corresponding to a local PCA outlier region (win8) on LG9 (NC_036849.1). a) Position of the MDS outlier region (red) on the linkage group (above) and standardized PC1 coordinates in PCAs for successive non-overlapping 100-SNP windows inside and around the outlier region (below). Each sample is represented by a line colored according to their haplogroup inferred from panel b). b). PCA for SNPs in the outlier region where the three major clusters found on PC1 are attributed to the 2 homozygotes (AA, blue, left; BB, yellow, right) and their heterozygote (AB, green, middle). Intermediate genotypes (A0, light blue; 0B, light green) were assigned to individuals outside of the cluster distributions. The histogram (above) represents the density of individuals along the first axis of the PCA. c) Proportion of inferred haplogroups for the win8 haploblock across sampling sites.
December 16, 2024 at 7:07 PM