title: [From symmetries to the laws of evolution. I. Chirality as a means of active media stratification].
abstract: Features of the hypothetical evolution of a hierarchy of chiral objects formed by active media are discussed. On the basis of experimental facts a new synergetic generalization is made: an evolving system can repeatedly broaden the spectrum of its symmetry types within one level of organization which increases its complexity and change the sign of chirality during transition to a higher level. Switching the chirality sign of macroscopic objects provides irreversibility of stratification. The known chirality of biological structures at different levels suggests that the chiral L/D-stratification should be universal and the hierarchical paths are stable and determined. A high level enantiomorph with reciprocal chirality demonstrates a wider spectrum of functionality. A fractal description of natural hierarchical systems is pointed out to be inadequate because it implicates invariance of the chirality sign of the objects at different scales.
authors.forename: V A
authors.initials: VA
authors.lastname: Tverdislov
authors.forename: A É
authors.initials: AÉ
authors.lastname: Sidorova
authors.forename: L V
authors.initials: LV
authors.lastname: Iakovenko
mesh_terms: D000818:Animals; D016880:Anisotropy; D005075:Biological Evolution; D017709:Fractals; D049810:Genetic Speciation; D006801:Humans; D009696:Nucleic Acids / Q000737:chemistry* / Q000378:metabolism; D011506:Proteins / Q000737:chemistry* / Q000378:metabolism; D013237:Stereoisomerism; D049490:Systems Biology; D013816:Thermodynamics
chemical_list: D009696:Nucleic Acids; D011506:Proteins