When is Biology Destiny? Biological Determinism and Social Responsibility Abstract I argue here that critics of biological explanations of human nature are mistaken when they maintain that the truth of genetic determinism implies the end of critical evaluation and reform of our social institutions. Such claim erroneously presupposes that our social values, practices, and institutions have nothing to do with what makes biological explanations troublesome. What constitutes a problem for those who are concerned with social justice is not the fact that particular behaviors might be genetically determined, but the fact that our value system and social institutions create the conditions that make such behaviors problematic