in the x direction, the water wants to flow in that direction) For a given hydraulic. conductivity, the vertical flow rate depends on the sum of the gravitational potential energy. gradient per unit weight of water (dz/dz =1) and the vertical gradient in soil water pressure.
Origin and spread of the 1278insTATC mutation causing TayâSachs disease in Ashkenazi Jews: Genetic drift as a robust and parsimonious hypothesis. Human Genetics 114 (4): 366â376. pmid 14727180.
Autosomal recessive inherited, Tay-Sachs disease is most common in families of Eastern European Jewish origin, where as many as 1 in 45 are carriers of the mutant gene compared to the general incidence of 1 in 300.This disease has actually been described in the Ashkenazi Jewish population as early as the 15 century.utosomal recessive inherited, Tay-Sachs disease is most common in families of Eastern European Jewish origin, where as many as 1 in 45 are carriers of the mutant gene compared to the general incidence of 1 in 300. This disease has actually been described in the Ashkenazi Jewish population as early as the 15 century.