Lysenkoism is a Soviet biological "theory" that mainly consists in rejecting western genetics. In place of genes, Lysenko postulated nothing particularly coherent, but he presented his ideas with revolutionary zeal that appealed to Stalin. I guess you could sum up Lysenkoism as "kill everyone who disputes Lysenkoism." And now, somehow, it's making a comeback.
It is interesting, although not surprising, to see that right-wing nationalists are pushing Lysenkoism -- along with other vestiges of Soviet ideology -- in Russia, with support from the Orthodox Church. This is where "right" and "left" blur together: identity politics, rejecting entire scientific fields based on their perceived origin. I can't really tell the difference between right-wing nationalism and left-wing flavors of identity politics, since both "wings" seem to define themselves by what they reject, and they share a lot of criteria. The Soviet Era's Deadliest Scientist Is Regaining Popularity in Russia
Trofim Lysenko’s spurious research prolonged famines that killed millions. So why is a fringe movement praising his legacy?