lance between the levorotatory and dextrorThe phenomena of monochirality and of racemization delay for some substances contrary to fast racemization for other substances are the natural riddles, guesses of which evade researchers for about 160 years after the monochirality discovery by Louis Pasteur. These phenomena are under wide study by the technique of thermal analysis [1, 2], because the understandings of their nature are of great interest as the basis for governing the optical activity of drugs, liquid crystals and some other goods in the processes of their industrial productions and storages and for developing the methods of medical analyses. Our presentation relates generally to bio-active organic substances. The proteins belonging to different organisms as well as the natural amino-acids incorporated into proteins or occurring free in tissues and lymphatic fluids are, as a rule, levorotatory; on the contrary, the riboses belonging to different DNAs and RNAs and the DNA and RNA molecules as whole are dextrorotatory. Such selectivity in the natural choice of a definite optical isomer requires special explanation, because the molar free energies of levorotatory and dextrorotatory isomers of the same overall chemical composition and the same chemical composition of their individual atomic groups are practically equal independently of the spatial location of the individual groups and, thus, it would seem that the numbers of the molecules with different arrangements of atomic groups should be the same and no chirality should be expected. However, chirality is inherent in all organisms, from the simplest to most complicated ones, and, what is more, transmits from one generation to another. This paradox will be explained. The riddles are not limited by this. Let the situation of the unbaotatory molecules of the same overall chemical composition and the same chemical composition of individual atomic groups arise by any unknown way by the time of the birth of any organism. It would seem that the interatomic oscillations and diffusion jumping of atoms should lead to interchange by the points of location and to balancing in the locations of the atomic groups of identical chemical composition. And such process really proceeds in some systems. But why doesn’t racemization proceed in other systems? Why do all organisms come into being with identical DNA and RNA optical isomers (dextrorotatory), and why doesn’t racemization proceed during their lives, independently of the time intervals between DNA replications? Why do all organisms begin their lives with identical proteins (levorotatory), and why are optical characteristics of their proteins the same up to their death? We answer all above questions on the basis of our Life Origination Hydrate Theory (LOHTheory) and chemical and structural features of ribonucleic acids and proteins and bearing in mind the thermodynamic and kinetic factors influencing the optical characteristics of functional organic polymers.