Adam’s rib: Pheromones and the adaptive evolution of human sexuality
Adam’s rib, revisited: Evolutionary divergence of mammalian sex chromosomes
The article linked (above) may be of interest in the context of my comments and response to commentary linked below.
“Simpler life doesn’t have chromosomes. It has DNA rings and those rings can be captured from other organisms. Either by non-hostile exchange or eating each other.”
I don’t think ingestion of heterospecific DNA by microbes is widely known, and was reluctant to suggest it as a precursor to the self / non-self recognition that accompanies the adaptive evolution of sex differences in yeasts. But, I did in: Human pheromones and food odors: epigenetic influences on the socioaffective nature of evolved behaviors.
Here’s the section head and excerpted text from:
An epigenetic continuum from microbes to humans: from theory to facts
“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). In yeasts, epigenetic changes driven by nutrition might then have led to the creation of novel cell types, which are required at evolutionary advent of sexual reproduction (Jin et al., 2011). These epigenetic changes probably occur across the evolutionary continuum that includes both nutrition-dependent reproduction in unicellular organisms and sexual reproduction in mammals. For example, ingested plant microRNAs influence gene expression across kingdoms (Zhang et al., 2012). In mammals, this epigenetically links what mammals eat to changes in gene expression (McNulty et al., 2011) and to new genes required for the evolutionary development of the mammalian placenta (Lynch, Leclerc, May, & Wagner, 2011) and the human brain (Zhang, Landback, Vibranovski, & Long, 2011).”
My academic and commercial interest in this complex ability in bacteria that suppress reproduction with pheromones when insufficient nutrients are available led me to sponsor the video game “Bacillus.” One entitlement is that I get to name an organism and attribute to it a characteristic. If a named organism eats the DNA of other bacteria, I named it! If you want to encourage others to have some fun while learning about the molecular biology of sex differences, there is still time to contribute to the game’s development and get credit for doing so.
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Evolution of the nervous system: conserved GnRH
< 1 MIN READ
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Hacking the Genome
< 1 MIN READ
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Human Pheromones and Comparative Epigenomics
2 MIN READ
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ecological social neurogenic niche
2 MIN READ
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Bickering theorists: opinions about selfish genes and group selection
2 MIN READ
1
A nutrient chemical and pheromone-dependent neurogenic niche
2 MIN READ
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Passing On Stress
2 MIN READ
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Human pheromone- and nutrient-dependent brain development and behavior
2 MIN READ
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Human pheromones and the visual appeal of other people (Part Three)
2 MIN READ
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Human pheromones and the visual appeal of other people (Part Two)
2 MIN READ
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Human pheromones and the visual appeal of other people (Part one)
2 MIN READ
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Human pheromones and brain development
2 MIN READ
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More than speculation: adaptive evolution in species from microbes to man
2 MIN READ
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Cultural processes are biologically based
2 MIN READ
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Pre-existing genetic variability or random mutations: a matter of priorities and choices
2 MIN READ
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Human Pheromones and Common Scents: Plants and Perfume
< 1 MIN READ
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Human pheromones and your immune system
< 1 MIN READ
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People select specific fragrances that suit their individual body odor
< 1 MIN READ
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Human Pheromones: extremely technical representation of the concept
2 MIN READ
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Human Pheromones: but No VNO; No Erox; No Human Pheromone Sciences
3 MIN READ
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A fallacious leap? Ancestral and derived traits
3 MIN READ
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Modeling odor processing in microbes, mice, and mankind
2 MIN READ
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Love is a receptor-mediated event: the pervasive influence of the late Robert L. Moss
3 MIN READ
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Exercise Alters Epigenetics
2 MIN READ
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History of intelligence (550 words)
2 MIN READ
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How could antibiotics alleviate symptoms of schizophrenia?
2 MIN READ
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A Preoccupation With Modesty…
2 MIN READ
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Pheromones: from microbes to man
< 1 MIN READ
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The biology of behavior: Seeing more clearly
< 1 MIN READ
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Explaining a good theory
< 1 MIN READ
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Effects of pheromones on menstrual synchrony and a gay man
2 MIN READ
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Teaching science to the religious: theories of development
2 MIN READ
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Human Pheromones: 2010 Powerpoint slides and 2011 poster presentation
2 MIN READ
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Is Love in the Air? Human Pheromones and Axillary Chemistry by George Preti
3 MIN READ
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Cookbook chemistry: food odors and hormones
< 1 MIN READ
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Human pheromones and food odors
< 1 MIN READ
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Another Remembered Present
2 MIN READ
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Pheromones and food odors add more than just color to your world
4 MIN READ
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Misrepresentations of biologically based cause and effect:
3 MIN READ
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The Perversion of Science by Evolutionary Psychologists
5 MIN READ
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Human skull study causes evolutionary headache
< 1 MIN READ
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Docosahexaenoic acid and autism: praying for hope, or preying on hope
< 1 MIN READ
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Timing is key in the proper wiring of the brain: study
2 MIN READ
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Cause and effect in biology
< 1 MIN READ
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Human Pheromones and sex differences in brain maturation
< 1 MIN READ
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Show me the science!
5 MIN READ
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Ethics, aphrodisiacs, and pheromones
< 1 MIN READ
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Digit ratio does not predict attractiveness of body odor
< 1 MIN READ
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An organizing principle for our sense of smell
< 1 MIN READ
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Epigenetics of food odors, nutrition, and pheromones
< 1 MIN READ
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Pheromones and falling in love (circa 1974)
< 1 MIN READ
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Trust the science. Don’t trust the hype
2 MIN READ
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Men and women who stare at goats…
2 MIN READ
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The Sex Lives of Insects: Part III
3 MIN READ
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The Sex Lives of Insects (Part II)
3 MIN READ
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The Sex Lives of Insects
< 1 MIN READ
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The epigenetics of food choice and mate choice
< 1 MIN READ
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Pheromones and detectable odors
2 MIN READ
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Cosmetics: are they useful or do they just make us feel good?
< 1 MIN READ
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Avian ‘Axe effect’ attracts attention of females and males
2 MIN READ
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The Mind’s Eyes: Mindful modeling of brain directed behavior
2 MIN READ
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Study results: Human pheromones affect women’s behavior
< 1 MIN READ
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Human Pheromones and the Biology of Behavior
5 MIN READ
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Honeybees, food odors, and perfume
< 1 MIN READ
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Sniffing out your nightlife / Pheromone-infused nightclubs
< 1 MIN READ
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Erox rises from the ashes
< 1 MIN READ
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Avian recognition of human faces
< 1 MIN READ
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Human Pheromones Affect Women's Behavior
2 MIN READ
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A lesser role for olfaction and pheromones in humans?
1 MIN READ
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Creating a Myth
< 1 MIN READ
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Dogs and humans: Then and now
< 1 MIN READ
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Excellent new book about pheromones
< 1 MIN READ
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Human Pheromones and The Philosophy of Science
2 MIN READ
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Natural scent of women linked to increased testosterone and seduction
< 1 MIN READ
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Too many good-smelling males is not good
< 1 MIN READ
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Love at first sight: Selective breeding, pheromones, and Divine intervention
3 MIN READ
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Human pheromones in tears automagically effect testosterone
2 MIN READ
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Exotic Pheromones and Concentrates
2 MIN READ
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Human Pheromones, The Scent of Eros, and Cultural Evolution
< 1 MIN READ
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Dialogue on pheromones: Avery Gilbert / James V. Kohl
2 MIN READ
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Mammalian pheromones are not a myth
3 MIN READ
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Molecular biology and social science theory
2 MIN READ
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Study Results: Human pheromones increase flirtatious behavior and ratings of attraction
2 MIN READ
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Results: increased flirtatious behavior and self-reported attraction
2 MIN READ
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Conditioned sexual arousal to odor
2 MIN READ
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Comparative biology of pheromonal communication
< 1 MIN READ
1
American and Canadian Mensa Presentation
< 1 MIN READ
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Sold on the human VNO?
< 1 MIN READ
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The Great Pheromone Myth (opinion/review)
19 MIN READ
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Human Pheromones and Face Preferences
< 1 MIN READ
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Human Pheromones and WHR: Pure conjecture?
< 1 MIN READ
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Welcome to Pheromones.com
< 1 MIN READ
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An attempt to change the concept
< 1 MIN READ
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Scent of a woman: Men’s Testosterone Responses to Women's Scent
< 1 MIN READ
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Earlier evidence: pheromones influence testosterone in men
< 1 MIN READ
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