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"Otsuka J" ×
PSBJ Review Article Oct 20, 2022
A Theoretical Study on the Cell Differentiation Retaining the Meristems in Higher Plants
Otsuka J*

The perennial trees regenerate new twigs when some branches are removed and some of such trees also regenerate roots from a separated branch when it is put into the soil. Many spe…

Annual Clonal Growth Perennial
PSBJ Review Article Sep 27, 2021
A Theoretical Study on the Cell Differentiation Forming Stem Cells in Higher Animals
Otsuka J*

The recent genome sequencing of multicellular diploid eukaryotes reveals an enlarged repertoire of protein genes for signal transmission but it is still difficult to elucidate the…

Development Growth Curve Hormones
PSBJ Research Article Jul 5, 2019
On the Origin of Genes
Otsuka J*

The character of a present-day organism is determined by the set of genes. Thus, the origin of genes is one of the most important problems in the origin of life. From the aspect of…

Cell wall Lipid vesicle Negative entropy
PSBJ Research Article Nov 21, 2018
A Mathematical Formulation of Evolution and Innovation II. From Unicellular Monoploid Eukaryotes to Multicellular Diploid Eukaryotes
Otsuka J*

Among the evolutionary lines of eukaryotes after the acquirement of the mitochondria, the present study focuses on the evolution and innovation from unicellular monoploids to multi…

Cell differentiation Conjugation Gene duplication
PSBJ Review Article Jan 3, 2018
A Mathematical Formulation of Evolution and Innovation I. Unicellular Organisms
Otsuka J*

Most types of evolution indicated on unicellular organisms are shown to be derived mathematically from the time change equation of organisms that self-reproduce, occasionally mutat…

Endosymbiosis Gene duplication Mutation