Fractions of a Field of Bt Crops Planted with Non-Bt-Expressing

question 21

Multiple Choice

Fractions of a field of Bt crops planted with non-Bt-expressing varieties:

• A)ensure that herbivore genes conferring susceptability to Bt are well represented in the next generation.
• B)ensure that selection for Bt resistance is not too intense within herbivore populations.
• C)impede the complete eradication of important agricultural pests.
• D)lead to higher losses to pests in the short term than if no fractions were planted with non-Bt-expressing varieties, but maintain the effectiveness of Bt in protecting crops in the long term.

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Definitions:

George F. Kennan

An American diplomat and historian, best known for his role in defining the U.S. foreign policy approach of containment during the Cold War.

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