What are the four most common GMO crops grown?______
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GMO & AGRICULTURE (2 满分)Genetically modified foods, for example tomatoes, have been developed to target the end consumer. In addition, biotechnology companies make products for the agricultural industry. These GMOs are aimed at increasing farm yields. Dr. Schwarcz discussed the two most common – herbicide tolerate and pest-resistant crops.For each product below, select the description that accurately describes how the genetic modification works in the agricultural setting:Glyphosate resistant canola:Bacillus thuringensis (Bt) corn:- 未答复The entire genome of Bacillus thuringensis bacterium is added to the corn genome to protect the corn from insects such as the corn borer.The corn genome has been modified to include genes from Bacillus thuringensis bacterium. When the field is sprayed with insecticides the plant is not affected while the insects are killed.The corn is protected against insects (in particular the corn borer) through the insertion of genes that code for the Bacillus thuringensis toxin into the seed. The farmer does not have to spray pesticides because when the part of the plant with the Bacillus thuringensis genes is ingested, the insect dies.
A. The canola genome has been modified to resist the glyphosate toxin produced by insects. Spraying with pesticides is no longer necessary because the insects die if they ingest part of the plant.The canola genome has been modified to provide tolerance to glyphosate based herbicides. The modified plants are able to withstand application of the herbicide while weeds competing for nutrients in the soil are destroyed. The canola genome has been modified to resist the glyphosate toxin produced by weeds. Spraying with pesticides can be reduced because the weeds will cause less damage to the plants.
B. The canola genome has been modified to provide tolerance to glyphosate based herbicides. The modified plants are able to withstand application of the herbicide while weeds competing for nutrients in the soil are destroyed.
C. The canola genome has been modified to resist the glyphosate toxin produced by weeds. Spraying with pesticides can be reduced because the weeds will cause less damage to the plants.
Bacillus thuringensis (Bt) corn:
A. The entire genome of Bacillus thuringensis bacterium is added to the corn genome to protect the corn from insects such as the corn borer.
B. The corn genome has been modified to include genes from Bacillus thuringensis bacterium. When the field is sprayed with insecticides the plant is not affected while the insects are killed.
C. The corn is protected against insects (in particular the corn borer) through the insertion of genes that code for the Bacillus thuringensis toxin into the seed. The farmer does not have to spray pesticides because when the part of the plant with the Bacillus thuringensis genes is ingested, the insect dies.
Researchers are developing a genetically modified version of rice that helps prevent iron deficiency anemia, a health issue that affects approximately 2 billion people. What organism are they using as the source of genes to code for ferritin, an iron storage protein? Answer in one word:______
During the 1980’s researchers used computer models to predict the effect of life expectancy of reducing fat in the diet from 30% to 10% (commonly recommended for low fat diets). What did the research show in terms of life expectancy?
A. There was no change in life expectancy.
B. Life expectancy was extended by 3 years.
C. Life expectancy was reduced by 3 months.
D. Life expectancy was extended by 3 days to 3 months.
E. Life expectancy was reduced by 3 years.
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