Are Genes in Fact the Secret of Life?

Online lecture and panel discussion with Nathaniel Comfort

Bildet kan inneholde: topp, hår, panne, øyenbryn, hake.

In James Watson’s famous story, Francis Crick bursted into the Eagle Pub in Cambridge in 1953, shouting “We have found the secret of life!”—the DNA double helix. That genes are the secret of life is almost a truism. But is it true? Certainly, hereditary lineage has a long history of defining one’s social role. Still, the idea that your genetic inheritance defines your true self does not stand up to scrutiny. For more than a century, a hereditarian concept of identity has proven a potent social tool: of maintaining an oppressive social order, as in eugenics or modern-day hunts for “crime genes.” Some say that the uniqueness of each human genome provides a biological basis for individualized, personalized treatment. In medicine, some advances have been made. But social and behavioral genetics, in neoliberal society, all too easily becomes a tool for marketing and surveillance. There is, however, an alternative—one that does no damage to the science. Instead of the secret of life, genes can be understood as one member of a web of causes and potentialities that together shape the self. Current research finds that DNA does influence complex social behavior, but it does so through tiny variations (SNPs) that act in packs of hundreds if not thousands to partly explain the trait in question. Evidently, for social behavior, no single gene is very important. Further, you are much more than your genes. Temperament, metabolism, tastes and smells—a good deal of what makes someone unique—depend on the microbes that coat and fill our bodies. Moreover, epigenetic variations—reversible, sometimes heritable, modulations in the DNA—permit the same DNA to have very different effects from one context to another. The flexibility, modularity, and responsiveness of DNA domains has caused some scientists to question whether “the gene” is even still a useful concept. Watson now says he invented the pub story for dramatic effect. We can refashion our narrative, too. Drawing on examples spanning from early twentieth-century Mendelism and eugenics to contemporary genomics, microbiology, and epigenetics, I’ll examine the origins, development, and implications of the hierarchical gene concept, and suggest an alternative way of thinking about the genome. Changing only our presumptions, we could move DNA from the base of the pyramid to a node in a network. It would have social consequences. If we remove the hierarchy that privileges genes as the essence of the self, insidious uses of genetics, such as eugenics and scientific racism, become untenable.

Publisert 16. sep. 2020 10:31 - Sist endret 16. sep. 2020 10:44