Ján Kočí

Sparse or clustered sampling plus rare-variant filtering collapse PCA plots into triangles and three-ray patterns; objective-guided manifold learning on high-dimensional classic PC scores recovers obscured structure.

This study evaluates qpAdm's performance on complex admixture histories and stepping-stone landscapes, finding high false discovery rates and suggesting protocol improvements.

The paper shows asexual hybrids mediate genomic introgression from an extinct species into their sexual parent, challenging the view of asexual lineages as evolutionary dead ends.

This study re-analyzes genetic data from Thailand to challenge previous conclusions about the genetic continuity between Kra-Dai speakers and Austroasiatic populations, revealing a more complex genetic history.