Original sentence: Proportions of European admixture in African American DNA have been found in studies to be 17 % and between 10.6% and 22.5%
Edited sentence: (Since there is but one race, however, and since Africa is the cradle of civilization where the first humans migrated from, the thought of any group discriminating against Africans shows the ignorance of racists and the lack of strong public and private education that is pervasive in this civilized world.)  Yet, proportions of European admixture in African American DNA have been found in studies to be 17 % and between 10.6% and 22.5%