The theory was given enormous political support in the Soviet Union from the late 1930s until the 1950s. Geneticists and biologists in general who disagreed with Lysenkoism lost their positions, and many were imprisoned or killed during the Stalinist purges of the late 1930s. | The theory was given enormous political support in the Soviet Union from the late 1930s until the 1950s. Geneticists and biologists in general who disagreed with Lysenkoism lost their positions, and many were imprisoned or killed during the Stalinist purges of the late 1930s. |