Anachronistic evolution (i.e., nutrient uptake in bacteria)

The Bacteria That Absorbed Mammoth DNA

by Ed Yong Nov 18, 2013

Excerpt: “Bacteria can feed on bits of DNA from their surroundings. They can also incorporate these fragments into their own genome, as easily as you might put a new book onto your shelf. These horizontal gene transfers give bacteria an edge in the evolutionary race.”

Excerpt 2: “He calls it anachronistic evolution. “It’s something we’ve not considered before and it’s not in our models of microbe evolution.””

My comment: See Kohl (2012) Human pheromones and food odors: epigenetic influences on the socioaffective nature of evolved behaviors

Among different bacterial species existing in similar environments, DNA uptake (Palchevskiy & Finkel, 2009) appears to have epigenetically ‘fed’ interspecies methylation and speciation via conjugation (Fall et al., 2007; Finkel & Kolter, 2001; Friso & Choi, 2002). This indicates that reproduction began with an active nutrient uptake mechanism in heterospecifics and that the mechanism evolved to become symbiogenesis in the conspecifics of asexual organisms (Margulis, 1998).”

This “anachronistic evolution” started somewhere, but I don’t know how it could have started outside the context of a living cell that could ingest the DNA from a cell that died. This appears to present yet another dilemma for theoretical biologists who want to remove the laws of physics from biologically based evolution.

See for example: Evolution of transcriptional enhancers and animal diversity: “Each of these papers, in one way or another, consolidates the idea that there will probably be no fixed law, like gravity, to explain at the molecular level how endless forms most beautiful and most wonderful have been, and are being evolved. It rather seems that a wide variety of peculiar molecular mechanisms perform, together, the complex task of putting the genome in action, in each cell type of each animal species, at every moment in life and under every possible physiological and environmental circumstance.”

My comment: No fixed law, such as gravity, infers no fixed law such as the Second Law of Thermodynamics. Clearly, if you dispense with the concept of “entropy” the structure of DNA can automagically exist inside or outside cells and outside the context of organismal complexity. With the magic of theory, the DNA of ever-more complex organized genomes simply self-organizes itself after the cell that automagically evolved ingests DNA from a cell that died.

About James V. Kohl 1308 Articles
James Vaughn Kohl was the first to accurately conceptualize human pheromones, and began presenting his findings to the scientific community in 1992. He continues to present to, and publish for, diverse scientific and lay audiences, while constantly monitoring the scientific presses for new information that is relevant to the development of his initial and ongoing conceptualization of human pheromones. Recently, Kohl integrated scientific evidence that pinpoints the evolved neurophysiological mechanism that links olfactory/pheromonal input to genes in hormone-secreting cells of tissue in a specific area of the brain that is primarily involved in the sensory integration of olfactory and visual input, and in the development of human sexual preferences. His award-winning 2007 article/book chapter on multisensory integration: The Mind’s Eyes: Human pheromones, neuroscience, and male sexual preferences followed an award winning 2001 publication: Human pheromones: integrating neuroendocrinology and ethology, which was coauthored by disinguished researchers from Vienna. Rarely do researchers win awards in multiple disciplines, but Kohl’s 2001 award was for neuroscience, and his 2007 “Reiss Theory” award was for social science. Kohl has worked as a medical laboratory scientist since 1974, and he has devoted more than twenty-five years to researching the relationship between the sense of smell and the development of human sexual preferences. Unlike many researchers who work with non-human subjects, medical laboratory scientists use the latest technology from many scientific disciplines to perform a variety of specialized diagnostic medical testing on people. James V. Kohl is certified with: * American Society for Clinical Pathology * American Medical Technologists James V. Kohl is a member of: * Society for Neuroscience * Society for Behavioral Neuroendocrinology * Association for Chemoreception Sciences * Society for the Scientific Study of Sexuality * International Society for Human Ethology * American Society for Clinical Laboratory Science * Mensa, the international high IQ society