[Paleopsych] WkStd: Of Genes and Genomes
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Of Genes and Genomes
http://www.weeklystandard.com/Utilities/printer_preview.asp?idArticle=5693&R=C5AF39231
Of Genes and Genomes
Where is the science of life taking us?
by Christine Rosen
06/13/2005, Volume 010, Issue 37
An Intelligent Person's Guide to Genetics
by Adrian Woolfson
Overlook, 224 pp., $21.95
ONE OF THE CONCEITS OF our times is that we live in such a complicated
world that we require expert guidance to complete even the simplest of
tasks. This sensibility is perhaps best exemplified by the small
industry of guidebooks and how-to manuals that ironically flatter our
incompetence by offering us the Complete Idiot's Guide to This, or the
Dummies' Guide to That. The British publisher Overlook has launched a
slightly different kind of series, called the "Intelligent Person's
Guides," and the most recent addition to the series is An Intelligent
Person's Guide to Genetics by Adrian Woolfson, who teaches medicine at
Clare College, Cambridge, and is a contributor to the London Review of
Books.
Dummies and Idiots are not the intended audience for Woolfson's
elegant summary, with its impressive bibliography and often
sophisticated discussions of genetic science. Woolfson's book tackles
the history and current state of genetic science, in the process
offering definitions and explanations of the basic features of the
science, descriptions of important discoveries, and discussion of the
attendant forces that influence and interact with DNA. He describes
succinctly the much-publicized race between the privately funded
scientist J. Craig Venter and researchers at the National Institutes
of Health to sequence the human genome, avoiding both the
breathlessness and hyperbole that so often infect descriptions of the
project.
Woolfson's achievement is his ability to explain complicated
scientific processes in lucid prose, marshaling metaphors that clarify
rather than obscure the material. Of the nucleosome, for example, the
group of proteins that packages DNA, Woolfson writes, "It functions
much like the chaperones who used to accompany Victorian ladies on
their excursions, determining whether the DNA is allowed to have
access to visiting proteins or not." To read someone of clinical
experience and scientific expertise who is also such a deft writer is
a rare treat.
Despite his enthusiasm for Victorian cultural examples such as P.T.
Barnum's Tom Thumb and the illusionist John Henry Pepper, Woolfson
unfortunately offers little grounding in the culture of geneticists,
past and present. Thomas Hunt Morgan, the American scientist who won
the Nobel Prize in 1933 for his experiments on the fruit fly
Drosophila melanogaster, was one of the few geneticists to distance
himself from eugenics, the movement that served as a precursor to
genetics in the early 20th century. Many other geneticists, such as
H.S. Jennings, were members of eugenics organizations until the 1920s.
In other words, geneticists pursued their science not merely for the
sake of science; they pursued it because it was a means to an
end--improving the human race--even when that end required coercive
means such as compulsory sterilization. It is difficult to consider
thorough a guide to genetics that includes nary a mention of
genetics's wicked stepsister, eugenics.
The best sections of Woolfson's narrative are his descriptions of
important moments of scientific discovery in the field of genetics,
which often include quirky details, like the story of scientists in
the 1950s who, in the course of studying DNA in E. coli bacteria,
"whirred in a kitchen blender" the cultures they'd created.
Information about contemporary research initiatives, such as the Model
Cell Consortium, which has embarked on a project far more ambitious
than the Human Genome Project but has received much less attention,
are also given their due. The Consortium is an effort to "model the
logic and behavior of 'intelligent' cellular systems" using the E.
coli bacteria.
From this effort to describe and replicate the structure of simple
bacteria, Woolfson writes, will flow attempts to mimic more complex
human cells, and to model their development--paving the way for what
he calls a new, "bottom-up" approach to genetics, or, as one of his
chapters is titled, "Making Creatures from Scratch." Woolfson
discusses dispassionately the creation of animal chimeras (two
dissimilar animals bred to create a new creature) and the revival of
lost species like the dodo. He suggests that, eventually, "it might be
possible to re-create the elusive ancestor of all human life on Earth,
a hypothetical organism known as LUCA, or the 'least universal common
ancestor'" since "the remnants of LUCA should be scattered across the
genomes of all living things." We could, he claims, bring LUCA "back
to life."
About these Lazarus-like future possibilities Woolfson is wildly
enthusiastic. Using man-made genomes, Woolfson speculates, "the
circuitry of existing species can be mixed and matched to produce
completely new biological structures and behaviors." We are on "the
cusp of a new Enlightenment," he argues, "defined by the accumulated
genetic knowledge that enables us to entertain the possibility of
modifying our own nature and creating artificial life."
Of the odder creatures we might have the power to create--the
flamingosceros or the kangapelican, for example--Woolfson reassures,
"A great many of these potential creatures will be logically flawed
and unrealizable." But why should we assume that we will keep Dr.
Moreau confined to his island? Woolfson, who earlier in his book notes
the great success of P.T. Barnum, should not be so cavalier about the
public's appetite for the biologically bizarre. A modern Barnum might
televise, for a far larger audience of viewers than Barnum himself
ever commanded, the creation and activities of such chimeras. More
worrisome, the logical conclusion of such experiments would be the
creation of synthetic human life--Frankensteins, if you're a
pessimist, or new Adams, if you're an optimist.
This future of "synthetic genomics," which would finally allow man to
move from merely controlling nature (through the imposition of
environmental controls such as plant breeding, or genetic controls
such as selecting embryos with certain traits) to becoming nature's
creator, requires few constraints in Woolfson's view. This new world
need not maintain the boundary between human and animal: "Once the
genes and programs that make us human have been identified," Woolfson
writes, "we might choose to transfer them into other species in order
to humanize them."
Spiritual constraints would not factor in, either, since Woolfson's is
an entirely secular worldview. He is, in fact, surprisingly
unreflective about this dramatic shift, from Nature to Man, of the
power to create new forms of life. "For over three billion years," he
writes matter-of-factly, "life has made do with 20, and in a very
small number of cases, 21 different amino acids; but in the future
such constraints will not be necessary." He seems unwilling to apply
Dollo's law--"once a species loses a particular characteristic, the
character elimination tends to be irreversible," which he cites to
describe evolution to the actions of humans creating new species.
This lack of concern for the long-term consequences of creating
synthetic life stems from Woolfson's sense that these things are
inevitable. In the preface to his book, he warns us that his work
"should not be read as advocating a particular course of action. My
view is slightly different: the creation of synthetic life is an
inevitability." This, of course, is advocating a particular course of
action--letting science continue on, uninterrupted and unburdened by
ethical limits--until such nonintervention yields a world where man is
no longer merely capable of controlling Nature, but of creating it
from whole cloth. But foregone conclusions can yield their own kind of
trouble, and unalloyed enthusiasm is its own worldview. It is here
where the clinician would have done better to yield to history and
experience. Woolfson never entertains any possibility but the
inevitability of these transformations.
"In the long term," he writes, "the question of whether or not we
should profoundly modify our nature, and that of other creatures, is,
like Turing's question, absurd. . . . Synthetic life is inevitable
because we are intrinsically curious, because we have utopian desires:
these are inalienably human characteristics." Yes, men have always had
utopian desires; and history, mythology, and religion are filled with
warnings to man about indulging in utopian schemes. But the more
malignant of them (such as those of a Hitler or a Stalin, for example)
were never inevitable once they faced concerted opposition.
Woolfson's optimism about our synthetic future stems, in part, from
his particular understanding of the human person. He returns over and
over again to the metaphor of the machine: "It seems inevitable that
we will have to resign ourselves to the unpalatable fact that we are
nothing more than machines," he writes. "That this troubles us is
itself a construction of our brains; one day such irrational
tendencies might be removed by adjusting the relevant brain
circuitry."
He adds, "It may be that one of the things that makes us different
from other primates is our possession of genes that make us believe in
concepts like the soul." Or, as Tom Wolfe put it more bluntly in an
essay on neuroscience a decade ago: Sorry, but your soul just died.
Woolfson is not alone in this effort to recast human beings as
soulless biological machinery. Neuroscientists are exploring the
brains of Buddhist monks and atheists, seeking clues to the biological
basis for faith. "All our characteristics," writes Woolfson,
"including consciousness, are generated by the agency of genetic
microcomputers inside our cells."
But if man is a machine, he will, in this new world of synthetically
constructed beings and carefully mapped brains, be one with a
different kind of soul; he might also be one with different passions
and pursuits. "What is it that makes us human?" Woolfson asks, towards
the end of his book. His answer is a biological form of navel-gazing:
"The emergence of all human characteristics--from cellular structure
to consciousness and the capacity for extended culture--has a rational
basis in the hardware and software modifications to our genomes," he
concludes. This is a bit deflating, like asking to speak to a
philosopher and instead finding yourself lectured by a computer
salesman. And those little genetic differences that separate us from
other animals have great consequences: They are the impulses that lead
us to name our offspring rather than devour them, for example.
Woolfson might be correct that we will appear as strange and gullible
to future generations as the Victorians, who believed in fairies, do
to us. But he would have done well to consider an observation made by
Jorge Luis Borges, whose Book of Imaginary Beings he cites. "The
future is inevitable and precise, but it may not occur," Borges wrote
in Other Inquisitions. "God lurks in the gaps." So, too, might
resistance to the more extreme forms of human control and alteration
of the natural world, and to attempts to reconfigure human nature
itself.
Christine Rosen is a fellow at the Ethics and Public Policy Center and
the author of Preaching Eugenics: Religious Leaders and the American
Eugenics Movement.
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