> So to further refine my question: can we recognize (visually or otherwise) strangers as potential relatives in some way by sense perception, if they are close

> So to further refine my question: can we recognize (visually or otherwise) strangers as potential relatives in some way by sense perception, if they are closer to us on the cone of ancestry? Like being able to tell someone's race? It's imperfect and fuzzy at the edges, but socially constructed racial categories more or less correspond to clusters on the human genetic principal component analysis graph: https://commons.wikimedia.org/wiki/Category:Principal_component_analysis_of_human_genetic_diversity https://commons.wikimedia.org/wiki/Category:Principal_compon...