“…A deme can only be defined and is not something as real as an Aristotelian Individual (Ghiselin, 1997). Similarly, groupings found as clusters of genes (Spencer, 2015), depends on which genes are investigated and most studies have been chosen to be geographically diverse and hence divergent (Marks, 2013). Admixture from past demes of archaic hominins such as Neanderthals, Denisovans and an unknown ancient African genetic ancestor, could be used to partition humans into groups, such as two groups of Sub-Saharan Africans, versus all non-Africans from an early Neanderthal introgression, and then an extra derived group of Denisovan Asio-Melanesians (Sankararaman et al, 2016;Vernot et al, 2016;Hsieh et al, 2016).…”