Mendel's «units of heredity»: inglorious end and second birth

The present article is aimed at giving a comprehensive explanation of why none of the Mendel's contemporaries had understood the meaning of his «laws». The close scrutiny of reasons usually being adduced such as little respectedness of the edition the report was published, obscurity of its author or his strange style shows their insufficiency and secondariness. The more deep causes of aversion of the «units of heredity» were the combinatorial language introduced by Mendel, the rigidity of his deductions and their inevitable speculativeness. In conclusion the permanent attributes of revolutionary idea are exposed: the resulting from it new mode of thinking, the narrowed field of seeing and a substantial tearing off recognized facts. It's just this peculiarity that dooms it to contemporaries' rejection.