Stalin's leading authority on science was Lysenko, a fellow who rejected Darwin and his ideas. To help you along, as you evidently haven't mastered the intricacies of the internet and the "search function" I'll give you this
link.
A link? You claim to be able to link ideas together, to analyse and compare them? Not just to parrot?
Well then do so! Stalin and Lenin were Darwinistic. Maybe you can hire a thinker to help you out. After he writes it all down for you carefully -- he'll do the thinking, you don't have to work beyond your capabilities! -- you can then read it back. How wise you'll sound!