Such information is of medical importance, as this ethnically diverse region is now the major source of migrant populations in the more developed countries.
In developing countries like China, migrants from domestic rural areas have become a major source of metropolitan centers' population and economic growth.
The private sector was the major source of contraceptives to different population groups.
The main implication of GWA studies is that the missing heritability is likely to be due to many DNA variants of small effect; although rare variants of large effect exist, they are unlikely to be a major source of heritability in the population (Wray et al., 2011).
Furthermore, the date of selection in Europeans was estimated to be around 10,000 years before present, suggesting that TRPV6 may have coevolved with lactose tolerance [13] as fresh milk is a major source of calcium in European populations.
On the other hand, coffee is a major source of exogenous antioxidants in populations in which coffee is commonly consumed [ 13- 15].
Gene flow is quantitatively a major source of genetic variation within populations, thus acting as a primary force to balance the detrimental effects of genetic drift and maintain high effective population sizes (Lynch 2010).
Chronic environmental exposure to Mn may consist of low Mn concentrations in air over long periods, but food grown in Mn-rich soil can also be a major source of Mn for human populations (1).
Thus, dietary intake information using FFQs in this population did not correlate with measured vitamin D levels, likely because the major source of vitamin D in this population is sunlight and not food sources.
