[Mechanical deformations of bioconstructions during different stages of morphogenesis]

The stress-deformation regularities of the body behaviour are taken as principal pattern formation factors in bioconstructions: mutually compressed cap rays of Acetabularia and contiguous tissue layers (the model). With the growth of rays or layers mechanical tensions which are initiated in them increase. If no morphogenetic loss of shape stability is resulted, an alternative algorithm of natural complication of their initial pattern is finally realized and ruptures, shifts and other deformations are formed in some weakened elements of the constructions. Among rigid stable parameters of biomaterials and geometric parameters of bioconstructions only the latter prove to be the determining ones in feasibility criterion of this or that extreme case of pattern formation (with the loss of stability or fractures). Restrictions imposed to the values of possible deformations are conditioned in case of the loss of pattern stability by geometric parameter, in case of fractures--by the strength parameters.