“Jacob and Monod found that in bacteria, genes are switched on and off by other genes. This led them to distinguish between effector genes and regulatory genes. Effector genes encode effector proteins… which mediate specific cellular functions. Regulatory genes encode proteins called regulatory proteins, which switch the effector genes on or off.”

In Search of Memory (2006)

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Eric R. Kandel81

American neuropsychiatrist 1929

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“Jacob and Monod not only outlined a theory of gene regulation, they also discovered the first regulators of gene transcription. These regulators come in two forms—repressors, genes that encode the regulatory proteins that shut genes off, and as later work showed, activators, genes that encode the regulatory proteins that turn genes on.”

Eric R. Kandel (1929) American neuropsychiatrist

In Search of Memory (2006)

“In the Jacob-Monod model, signals from a cell's environment activate regulatory proteins that switch on the genes encoding particular proteins. This led [Philip] Goelet and me to wonder whether the crucial step in switching on long-term memory in sensitization might involve similar signals and similar gene regulatory proteins.”

Eric R. Kandel (1929) American neuropsychiatrist

In Search of Memory (2006)

“Jacques Monod… published a paper entitled "Genetic Regulatory Mechanisms in the Synthesis of Protein." Using bacteria as a model system, they made the remarkable discovery that genes can be regulated—that is, they can be switched on and off like a water faucet.”

Eric R. Kandel (1929) American neuropsychiatrist

In Search of Memory (2006)

“The fact that a gene must be switched on to form a long-term memory shows clearly that genes are not simply determinants of behavior but are also responsive to environmental stimulation, such as learning.”

Eric R. Kandel (1929) American neuropsychiatrist

In Search of Memory (2006)

“When you eat a healthy, whole foods, plant-based diet, it changes the expression of your genes. It turns on the good genes, turns off the bad genes. Your genes are a predisposition, but your genes are not your fate. And even if your mother and your father and aunts and uncles all died of diabetes, cancer, even heart disease, it doesn't mean that you need to.”

Dean Ornish (1953) American physician

Interview in the documentary-film The Game Changers by Louie Psihoyos (2018).

“Genes do indeed behave as if they have selfish goals, not consciously, but retrospectively: genes that behave in this way thrive and genes that don’t don’t.”

Matt Ridley book Genome

Source: Genome (1999), Chapter 8 “Self-Interest” (p. 128)

“The main purpose of most genes in the human genome is regulating the expression of other genes in the genome.”

Matt Ridley book Genome

Source: Genome (1999), Chapter 10 “Stress” (p. 150)

“I hope my fans remember my name is Gene Vincent and not Gene Autry.”

Gene Vincent (1935–1971) American musician

As quoted in Gene Vincent and Eddie Cochran: Rock'n'roll Revolutionaries (2004) by by John Collis, p. 181

“The idea that a few people have about the gene being the target of selection is completely impractical; a gene is never visible to natural selection, and in the genotype, it is always in the context with other genes, and the interaction with those other genes make a particular gene either more favorable or less favorable. In fact, Dobzhanksy, for instance, worked quite a bit on so-called lethal chromosomes which are highly successful in one combination, and lethal in another. Therefore people like Dawkins in England who still think the gene is the target of selection are evidently wrong. In the 30s and 40s, it was widely accepted that genes were the target of selection, because that was the only way they could be made accessible to mathematics, but now we know that it is really the whole genotype of the individual, not the gene. Except for that slight revision, the basic Darwinian theory hasn't changed in the last 50 years”

Ernst Mayr (1904–2005) German-American Evolutionary Biologist

Part of the answer to the question "Where do you think Darwinism is going to go in the next 50 years?"
What evolution is: Talk with Ernst Mayr (2001)

“Complex organisms cannot be construed as the sum of their genes, nor do genes alone build particular items of anatomy or behavior by themselves. Most genes influence several aspects of anatomy and behavior—as they operate through complex interactions with other genes and their products, and with environmental factors both within and outside the developing organism. We fall into a deep error, not just a harmful oversimplification, when we speak of genes “for” particular items of anatomy or behavior.”

Stephen Jay Gould book I Have Landed

"The Without and Within of Smart Mice", p. 234 (originally appeared in Time, 1999-09-13)
I Have Landed (2002)

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Eric R. Kandel81

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