title: [The Curie principle and the morphological diversity of Pandorina morum (Müll.) Bory colonies (Volvocaceae)].
abstract: Morphological diversity of polyhedral colonies of Pandorina morum cultivated in the artificial environment approximating ecologically pure natural environment was studied. 4-, 6-, and 8-cell colonies were observed to occur most frequently in populations. These colonies tend to produce the most symmetrical shape at each of their growth stage. Two of the three theoretically possible combinatory types of 16-cell colonies were certainly determined: -43m and 222. These two types share a common character; the presence in the point group of symmetry of three mutually perpendicular twofold axes stressing the absence of locomotory specialization in the cells and allowing free rotation of the colony in space. This result was interpreted in the context of Curie's dis-symmetry principle stating that symmetry of an evolving object is disturbed only if it is not confined within the symmetry of the environment.
authors.forename: Iu L
authors.initials: IuL
authors.lastname: Voĭtekhovskiĭ
authors.forename: M G
authors.initials: MG
authors.lastname: Timofeeva
authors.forename: D G
authors.initials: DG
authors.lastname: Stepenshchikov
mesh_terms: D000818:Animals; D044822:Biodiversity; D000460:Chlorophyta / Q000254:growth & development*; D003470:Culture Media; D008828:Microbiological Techniques
chemical_list: D003470:Culture Media