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../de_codifications/systemic_organization.html
One of the preliminary questions here is the logics of spatial organizing and the possible gaps between the anatomical and the molecular/genetic. The gradient from the anthropomorphic-corporeal body to genetic code is one of the primary analytical assumptions which informs both contemporary anatomy and genetics textbooks, and it serves as a relational and differentiating function between these scientific practices. It is especially this differentiating character, along the assumed gradient from the macro- to the micro-biological, that these two significantly distinct modes of logic with respect to the body become more prominent.
The question here is twofold: What are different logics or modes of knowledge-production
by which molecular biology (in contrast to anatomy
and physiology) approaches and organizes some object termed "the body"? Secondly,
as a socially-embedded science with complex histories, how do specific forms
of the body-language relationship (forms of textualization, taxonomic fragmentation,
complex sign systems) contribute not only to the reproduction of scientific
praxis itself, but also to the production of discrete units relating to the
subject as a body? The first question primarily has to do with the ways in
which a particular scientific practice maps out its terrain of research, establishing
the issues, conceptual nodes, and problems that will be of concern. The second
question has to do with the methodologies, techniques, and technologies involved
in the processes of research, development, and practical (that is, medical
and/or commercial) implementation.
../de_codifications/body_textuality.html
The particular mode of textualization within genetics is qualitatively different
from the constructivist logics of anatomical science. Working from the molecular
level, the body as a whole or in parts is not an explicit part of the epistemology
of genetic research. Classical and contemporary genetics does not so much
anatomize the microbiological body, as they are concerned with the processes
whereby the body on the biochemical and microbiological level is regulated,
produced, and maintained as a series of information-transmission patterns.
If the cell forms the essential unit of composition of the anatomical body,
DNA does not analogously compose the genetic body.
The genetic code - the particular sequence of nitrogenous bases which twist
and turn to help form a given chromosome - is a linearly-arranged, complementary
(Adenine always binds to Thymine, Guanine to Cytosine), "DNA text" based almost
entirely on differential relationships. The letters which geneticists use
to signify the sequence of bases (A for Adenine, T for Thymine, G for Guanine,
C for Cytosine) form a combinatorial series which provides a blueprint for
the production of a variety of amino acids (which, when chained together,
form the structural and biochemical "building blocks" of proteins). When geneticists
speak of a genetic code, most often what is referred to is the relationship
between a given sequence unit and the production of an amino acid.
However, it is not exactly accurate to use linguistic or "text"-related tropes
in discussing the genetic code, since DNA does not, strictly speaking, have
a grammar. This non-grammatical textuality of DNA has undergone (and is undergoing)
several changes since Mendel's experiments with plant hybrids in the early
part of the century. Most notably, it was James
Watson and Francis Crick's research during the 1950s on the structure
and mechanics of DNA that helped to establish the specific "coding" character
of genetic material. Watson and Crick explicitly made reference to the notion
of "genetic information" rather than linguistic signs or a molecular linguistics.
Yet, as many historians of science point out, this conception of DNA was
fairly enclosed; DNA at this point (what physicist Erwin Schroedinger had
earlier dubbed the "master molecule") constituted a highly centralized, hierarchical
information-operation distribution point which ran linearly from the genetic
code to the processes it activated for protein production. In an extension
of classical genetics, Watson and Crick's model concerned itself with the
transmission of units of genetic information, within the cellular processes
of an organism as well as across generations of organisms. As a molecular
structure based almost entirely on a multiplicity of differential, combinatorial
relationships, the genetic "code" was more closely aligned metaphorically
with the notion of data or information established by classical information
theory and cybernetics.
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