The approach to equilibrium in certain dynamical systems can be usefully described terms of information-theoretic functionals. Well-studied models this kind are Markov processes, chemical reaction networks, and replicator dynamics, for all which it proven, under suitable assumptions, that the relative entropy (informational divergence) state system with respect an is nonincreasing over time. Th...

Fusion of plasmodia of strains 15 and 29 of the myxomycete Physarum polycephalum under appropriate conditions results in a lethal reaction visible to the naked eye. Examination by autoradiography and electron microscopy of areas in which the reaction is occurring shows that most of the nuclei derived from strain 29 (the sensitive strain) are enclosed in vesicles and are disintegrating, but that...

The genetic basis of vegetative incompatibility in the cellular slime mold, Dictyostelium discoideum, is elucidated. Vegetatively compatible haploid strains from parasexual diploids at a frequency of between 10(-6) and 10(-5), whereas "escaped" diploids are formed between vegetatively incompatible strains at a frequency of approximately 10(-8). There is probably only a single vegetative incompa...

In the myxomycete, Physarum polycephalum, the bulk of nuclear DNA replication occurs during a period of a few hours immediately following upon mitosis. During the remainder of the intermitotic period, incorporation of thymidine-(3)H continues at a low rate in the region of the nucleolus (radioautographs). A few nuclei incorporated thymidine-(3)H into the extranucleolar chromatin at a high rate ...

Abstract The plasmodium of Physarum polycephalum is a unicellular and multinuclear giant amoeba with computational abilities. has been widely used as model organism in the field bio-computing; however, its ability to perform computation related biological nature itself essential sense not yet fully realized. Therefore, this study, we focused on phenomenon which trapped closed space surrounded b...