Introduction. The common disease-common variant (CDCV) hypothesis posits that common, interacting disease alleles underlie most common diseases, perhaps in association with environmental factors [1] , [2] .imilarly, The prevalence of the disease in the population is then: and the PAF is: The sibling recurrence risk is given by: where V a is the additive genetic variance divided by Îº 0 2, V d is the dominance genetic variance divided by Îº 0 2 and K = Îº/Îº 0.
Marula oil is extracted from the kernels (nuts) of the Marula tree (Sclerocarya birrea), from the Anacardiaceae family.arula oil contains a large proportion of monounsaturated fatty acids and natural antioxidants which make the oil very stable.
the origin of efficacy. Other impure, mass produced marula oils are obtained by crushing the entire fruit; skin, nut and kernal together, then extracting the oil using extreme heat and chemicals. This process kills the naturally occuring properties, leaving residue behind and rendering the oil void of any effective skincare benefits.