sentences:  A great controversy arose regarding the compatibility of genetics, and by extension eugenics, with Marxist science.Filipchenko, in an attempt to defend eugenics’ relevance to Marxist dialectic, argued against Lamarckism, the other theory on inheritance that some Soviet scientists had argued was more compatible with the tenets of Marxism, by stating that if it were true, then the negative qualities that Lamarckism associated with poverty and the lower class would have prevented them from rising up against the bourgeoisie in the first place.Despite eugenics surviving the conflict between genetics and Lamarckism, Filipchenko's work in eugenics was effectively cut short with the emergence of the Great Break (USSR) in 1929.