The Development of Bt Crops Raises Concerns Because

question 30

Multiple Choice

The development of Bt crops raises concerns because

• A)Bt crops have been shown to be toxic to humans.
• B)pollen from these crops is harmful to monarch butterfly larvae in the field.
• C)if genes for Bt toxin "escape" to related weed species, the hybrid weeds could have harmful ecological effects.
• D)Bacillus thuringiensis is a pathogen of humans.
• E)Bt toxin reduces the nutritional quality of crops.