much do you know
about GM foods?
If you live in the United States,
it's almost certain that you've eaten foods made from genetically
modified crops. But how much do you know about them?
Test your knowledge of high-tech foods with our low-key quiz. The
quiz was written by Steve Tally and Peter Goldsbrough, who research
GM foods at Purdue University.
1. When was the first genetically modified plant produced in
Which foods use genetically modified organisms in their production
to the largest extent?
Most foods derived from genetically modified crops contain:
What are the current benefits of having foods made from genetically
improve farm profitability and make some farmers' jobs easier.
allow farmers to greatly increase the amount of crops produced.
improve convenience for consumers, e.g. by creating foods
with longer shelf lives.
improve the nutritional quality of foods.
cause less damage to the environment than conventional chemical-intensive
same number of genes as food produced from conventional crops.
same number of genes as foods produced from hybrid crops.
or two additional genes.
of additional genes.
genes at all.
Are foods derived from genetically modified crops required to be
tested for possible allergic reactions in people?
Are foods derived from genetically modified crops nutritionally
they offer substantial health advantages over foods produced from
they offer some health advantages over foods produced from conventional
they are neither better nor worse than foods from conventional
they are slightly less healthful than foods from conventional
foods produced from genetically modified crops are a known health
How long does it take to develop a new genetically modified
The GM corn called Bt corn produces toxins that kill the European
corn borer and its relatives. Can these insects develop resistance
to the toxins produced in Bt corn?
is impossible for insects to develop resistance to Bt corn.
is unlikely that insects will develop resistance to Bt corn.
certain conditions insects may develop resistance to Bt corn.
is almost certain that insects will develop resistance to Bt corn.
are already resistant to the toxins produced in Bt corn.
Can genes escape from genetically modified crops and jump to other
and often do.
to some crops, but those crops aren't genetically modified.
during rare climatic conditions.
genes cannot move from species to species without human intervention.
Can scientists predict with certainty where an inserted gene will
go on a plant chromosome?
modern genetic techniques, scientists can insert genes precisely.
are inserted on the proper chromosome, but there is no control
over the exact location.
have a general idea of where the gene will go and what it will
do to the plant.
just a shot in the dark.