Key events
22. Biotechnology was probably first used by
the Egyptians from 2000 BC, when they developed techniques such
as fermentation (see paragraph 7). It was Gregor Mendel (1822-1884)
who first described the particulate nature of inheritance[33]
that we now describe as genes. William Bateson[34]
coined the word genetics in 1905 and Wilhelm Johannsen attached
the name "genes" to the Mendelian units of heredity
in 1909. In 1903 Walter Sutton recognised the chromosomes as the
carriers of Mendel's units of heredity[35],
but it was only in 1944 that Avery, MacLeod and McCarty identified
DNA as the "genetic material". The real breakthrough
in modern molecular biology was the Cambridge elucidation of the
structure of DNA in 1953 by Watson and Crick. Two chains, complementary
to one another, built into the molecule were discovered to be
the key to heredity. The following half century has seen a revolution
in our understanding of the manner in which genetic information
is expressed within cells and passed between cells and generations.
It is only now, after this half a century of learning, that commercial
applications of these discoveries are appearing. While the early
products of genetic modification (such as human insulin) were
in use from the early 1980s, the first release of a GMO into the
environment of the United Kingdom was not until 1986[36].
The first GMO which could have been used in food, a modified yeast
for bread, was approved in 1990 and the first plant (a delayed
ripening tomato) in 1995, but while this product may be imported
into Europe and used for food it still awaits approval to be grown
within the Community. As well as developing and regulating the
science, the United Kingdom has also explored the ethics of genetic
modification through the reports of the Polkinghorne[37]
and Banner[38]
committees.
23. Currently, no GM crop is being grown on a
commercial scale in the EC, though some permits have been issued
and many applications are in progress (see Appendix 4). Permits
exist for a variety of maize produced by Novartis to be grown
commercially[39]
and to be used for animal feed. It is this particular variety
which is the subject of a lawsuit in France, the Member State
which issued the marketing consent at the successful conclusion
of the EC process. In February 1998 Greenpeace applied to the
French courts to overturn the issuing of the consent. The Conseil
d'etat issued an injunction preventing the marketing of the maize
until the case put by Greenpeace had been resolved. GM tomatoes
are on trial in Spain, but a commercial permit has not yet been
issued. Chymosin (used in vegetarian cheese) is an enzyme and
is produced in laboratories, a release permit is not thus required.
24. GM varieties of maize and soya, two major
commodity crops, are being grown on an increasingly large scale
in north America. These varieties have been modified for herbicide
tolerance, insect resistance or both. GM tomatoes are also being
grown. The crops which are imported into the EC have all had to
be approved for the uses (food or animal feed), to which they
are put. The tomatoes have been approved for use as paste; soya
and its derivatives for food use and maize for use as an animal
feed. If the crop has been sufficiently processed to mean that
it poses no environmental risk, a release permit is not required
for import[40].
25. Varieties of GM soya and maize have not been
segregated from their unmodified equivalents and are thus entering
Europe in "co-mingled" shipments (see paragraphs 129-134).
33