A method and an apparatus for introducing information into a living
organism without fail and without disturbing the original function of the
living organism. Information to be introduced into a biogenic DNA is
prepared in a step. This information is compressed in the next Step. The
compressed data is converted into base sequence data in the next step.
The base sequence data has an error correction code inserted thereinto in
the next step, has a buffer sequence inserted thereinto in the next Step,
and has a sequence for positive selection inserted thereinto in the next
step. If the position of introduction is determined in the next step to
be a sequence complementary to the untranslated region, then an intron
sequence is added. If the position of introduction is determined in the
next step to be intron, then the next step is skipped and the position
for introduction (which has the least effect on the living organism) is
determined in the following step immediately after the skipped step. The
present invention may be applied to genetically modified foods.