Watch Jerome Lejeune - To the Least of My Brothers and Sisters (2015) : Full Movie Online Free To the Least of My Brothers and Sisters is a new documentary on the life of Jerome Lejeune, the Father of Modern Genetics that was made to celebrate the 20th anniversary of his death. Filmed on two continents, it contains numerous interviews with former colleagues, families, current medical researchers, and others, all who express the importance of Jerome Lejeune in both the history of medicine and the defense of the dignity of human life.