Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Hypercube Structure of the Genetic Code Explains Conservative and
  Non-Conservative Aminoacid Substitutions in vivo and in vitro   A representation of the genetic code as a six-dimensional Boolean hypercube
is described. This structure is the result of the hierarchical order of the
interaction energies of the bases in codon-anticodon recognition. In this paper
it is applied to study molecular evolution in vivo and in vitro. In the first
case we compared aligned positions in homologous protein sequences and found
two different behaviors: a) There are sites in which the different amino acids
may be explained by one or two "attractor nodes" (coding for the dominating
amino acid(s)) and their one-bit neighbors in the codon hypercube, and b) There
are sites in which the amino acids correspond to codons located in closed paths
in the hypercube. In the second case we studied the "Sexual PCR" experiment
described by Stemmer and found that the success of this combination of usual
PCR and recombination is in part due to the Gray code structure of the genetic
code.

19
The categories of this paper are: eess
15
The categories of this paper are: nucl-ex
32
The categories of this paper are: atom-ph
0
The categories of this paper are: hep-ph
8
The categories of this paper are: hep-ex
29
The categories of this paper are: funct-an
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
16
The categories of this paper are: stat
20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con
1
The categories of this paper are: cs
17
The categories of this paper are: q-fin
31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
3
The categories of this paper are: physics