Although water bodies are currently separated and thus gene flow is interrupted, lineage sorting in the current populations may not be completed.
The idea behind the DNA projects is that analysts can look for telltale sequences in African-Americans' genes that also appear in the current populations of various African regions, and thus link the Americans to their probable point of origin.
Given that these historical industries had dominated the economic and social life of these regions for such a long time, there's a question about whether they also influenced residents' personality traits – particularly those seen in the current populations living there.
Bubonic plague used to decimate one-third of European populations at a time, and its effects are visible in the current populations of Europeans, including some unexpected consequences that are summarized in the book the "Survival of the Sickest" (Moalem and Prince, 2008).
Although Fis values do not provide evidence for inbreeding in the current populations, it is unclear whether inbreeding or other factors including bottlenecks during the history of particular EAS ethnic groups may have contributed to the relationships between these populations.
As a consequence, certain copies arriving with the founders have a high occupancy in the current populations.
