regulation

The eternal significance of microRNAs (8)

Use of definitions in attempts to explain any aspect of species-specific biophysically constrained cell type differentiation and aging has been replaced by the use of model systems of biological processes.  Biological processes can be compared to so-called “evolutionary processes” to show that only biological processes need to be considered in the context of Darwin’s “conditions of life” or answers to the the question  What is Life? Schrödinger (1944). K. L. Mettinger et al. (eds.), Exosomes, Stem Cells and MicroRNA, Advances…

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Controled Stem Cell Expansion

Serine … is one of the proteinogenic amino acids. [It]… is classified as a polar amino acid. My comment: Serine synthesis in the body is linked to glycine, which also may be naturally produced when UV light illuminates simple ices (e.g., combinations of water, methanol, hydrogen cyanide, and ammonia). That suggested to some people that glycine and other amino acids may be easily produced in cold regions of space, and the suggestion, like virtually all suggestions, seems to be believable…

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Physics, Chemistry, and Molecular biology (PCMb)

Physics, Chemistry, and Molecular biology (PCMb) link ecological variation to ecological adaptations via a model of gene-cell-tissue-organ-organ system complexity that I first presented in 1992. After adding gene activation by pheromones, I co-authored a book that linked the pheromone-controlled physiology of reproduction across species from microbes to man: The Scent of Eros: Mysteries of Odor in Human Sexuality (1995/2002) Since then, others have written books that claimed that pheromones evolved: Pheromones and Animal Behaviour (2003/2014) and one claimed that mammals…

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  • Randomness and Divine Providence
    A Q&A on randomness and God’s providence …the main goal is to really put together a collection of scholarly studies of these issues: physicists, biologists, […]
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