For all the past century, humans had
no direct control over
plant breeding, except through selecting and growing natural hybrids.
From 1974 scientists are able to create genetically modified crops
by
manipulating their DNA. They insert a gene or change the gene sequence
of the plant.
The inserted gene sequence may come from another plant or from
a completely different species.
For example the transgenic corn contains a gene from a bacterium.
Other
foods like potatoes, tomatoes, soy and other cereals have been
changed and manipulated.
The reason is to create a better product which is pest or disease
resistant, can tolerate heat or cold and is stronger from the attack
of
bacteria and viruses.
This technology has many risks.
First of all the effect on human body: there is the possibility
that we
might see an increase in the number of allergies reaction to
food. When
in touch with certain molecules our system can react violently.
Also, there could be a risk for the ecosystem, because the OGM
plants
are more resistant than "natural" ones and they could replace
them in
few years.
Many countries are using the transgenic seeds to
make better fruit and
vegetables, but there are severe regulations and very restrictive
laws
for using and selling these products.
My question is: it is worth
to change the nature when she gives us
enough food to survive?
Scientists say that we will need more food for the future since
the population is going to increase, but I think that now there is
a
discrepancy between the richest countries and the poorest and that
we
waist a lot of food that we could give to the population who really
need
it. I also think that if we change the way of eating we won't need
to
change the nature.
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