What can our DNA tell us about Jewish the Jewish people? Sam Zev reveals how our genetic code carries our collective narratives and bonds us even tighter together. He explains how, remarkably, the Kohen modal haplotype was preserved over 106 generations resulting in the highest paternal certainty rate ever recorded among any population. Zev asserts that it is the faithfulness of the Kohens’ wives, however, that enabled this continuity to be possible. This otherwise hidden story of faithfulness, Zev emphasizes, is the real information encoded in our DNA.