  During cellular translation, incorporation errors occur. It is the addition
of amino acid residues not corresponding to the mRNA code. With an increase in
the number of residues in the synthesized molecule, the probability of failure
in at least one link increases rapidly, which leads to improper folding and
loss of functionality of the entire molecule. A simple mathematical model is
presented, which shows that the amplification factor equals approximately the
number of links in the synthesised sequence. We assume that the enzymatic
processes of recognition of amino acids and their addition to the synthesized
molecule include the formation of intermediate pairs of radicals with
spin-correlated electrons. If a weak external magnetic field slightly changes
the rate of quantum singlet-triplet conversion, then a significant change in
the probability of occurrence of incorrect sequences of ribosomal translation
occurs.
