The flip of a switch. Evolution is as simple as that!

Is evolution as simple as the flip of a switch?

Does Evolution Evolve Under Pressure?

  • BY EMILY SINGER, QUANTA MAGAZINE
  • 01.17.14
  • 1:20 PM

Excerpt: “In 1996, Susan Rosenberg, then a young professor at the University of Alberta, undertook a risky and laborious experiment. Her team painstakingly screened hundreds of thousands of bacterial colonies grown under different conditions, filling the halls outside her lab with tens of thousands of plates of bacteria. “It stank,” Rosenberg recalled with a laugh.

My comment: What “stank” was the concentration of species-specific pheromones that control the nutrient-dependent physiology of reproduction in species from microbes to man via conserved molecular mechanisms.

I this article, the biophysical constraints on ecological adaptations are removed from any consideration whatsoever. Stress-induced beneficial changes are simply attributed to mutations that cause diseases and disorders.

The same molecular mechanisms that perturb protein folding somehow also cause mutation-driven evolution to somehow occur via selection for something that theoretically occurs at the flip of a switch.

(SARCASM) Thus, ecological variation is not considered; mutation-driven evolution is accepted without question; and all is right in the world of theoretical biology that is based on mathematical models. Never mind the biological fact that all experimental evidence shows us ecological adaptations are nutrient-dependent and pheromone-controlled (e.g., the thousands of plates stank) via conserved molecular mechanisms in species from microbes to man. The important thing to know, according to this article, is that evolution “evolves.”

I reiterate: “In 1996, Susan Rosenberg, then a young professor at the University of Alberta, undertook a risky and laborious experiment. Her team painstakingly screened hundreds of thousands of bacterial colonies grown under different conditions…”

In 1996, our Hormones and Behavior review article: From Fertilization to Adult Sexual Behavior, included a section on molecular epigenetics that placed ecological adaptations into the context of nutrient-dependent (e.g., growth under different conditions) pheromone-controlled alternative splicings of pre-mRNA, which led to — among other differences — the sex differences in unicellular yeasts at the advent of nutrient-dependent pheromone-controlled physiology of sexual reproduction.

It will be interesting to someday read what others have since learned about how mutations led to sexual reproduction by “flipping” a “switch.” Meanwhile, according to this article, we know only that evolution evolves sex differences like it evolved all the other differences in cell types of individuals of all species.

(SARCASM) Evolution “flipped some switches,” like the one that caused eye regression in the cave fish.

Thank God that evolution did not “flip a switch” that left us blind and that nutrient-dependent pheromone-controlled ecological adaptations occur via conserved molecular mechanisms in all species. 

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