MCB 4271: Exam 4 Lecture 40 Q & As
(Verified Answers) 2026 Update
What are the 5 effects of selective breeding? - Correct
Answers ✅Increase size and growth rate
Increase yield
Increase stress resistance
Enhance taste
Change color
Who were Dr. Stanley Cohen and Herbert Boyer? - Correct
Answers ✅Developed the first genetically modified
organism (E. coli that expressed a tetracycline resistant gene)
in the 1970s
What are the main benefits of genetically modified animals
(for non-research purposes)? - Correct Answers
✅Nutritional value
Enhanced development
Disease resistance
Disease eradication/transmission
Therapeutics
How did GM pigs gain resistance to disease? - Correct
Answers ✅They were engineered to become resistant to
porcine reproductive and respiratory syndrome virus
, MCB 4271: Exam 4 Lecture 40 Q & As
(Verified Answers) 2026 Update
How did GM chickens gain resistance to disease? - Correct
Answers ✅Chickens were GM to prevent avian flu
How is E. coli used as a therapeutic? - Correct Answers ✅It
can be used to produce insulin and probiotics (treat ALS and
neurodegenerative disease)
What are the benefits of GM food? - Correct Answers
✅Increased yield
Increased stress resistance (in droughts)
Decreased pesticide, insecticide, and herbicide use
Increased nutritional value
Increased shelf life (via gene silencing)
Increased resistance to disease
Increase resistance to pesticides
When were GM crops introduced? - Correct Answers
✅1990s
What are the four most common GM crops? - Correct
Answers ✅Soybeans
Corn
Canola oil
Cotton
(Verified Answers) 2026 Update
What are the 5 effects of selective breeding? - Correct
Answers ✅Increase size and growth rate
Increase yield
Increase stress resistance
Enhance taste
Change color
Who were Dr. Stanley Cohen and Herbert Boyer? - Correct
Answers ✅Developed the first genetically modified
organism (E. coli that expressed a tetracycline resistant gene)
in the 1970s
What are the main benefits of genetically modified animals
(for non-research purposes)? - Correct Answers
✅Nutritional value
Enhanced development
Disease resistance
Disease eradication/transmission
Therapeutics
How did GM pigs gain resistance to disease? - Correct
Answers ✅They were engineered to become resistant to
porcine reproductive and respiratory syndrome virus
, MCB 4271: Exam 4 Lecture 40 Q & As
(Verified Answers) 2026 Update
How did GM chickens gain resistance to disease? - Correct
Answers ✅Chickens were GM to prevent avian flu
How is E. coli used as a therapeutic? - Correct Answers ✅It
can be used to produce insulin and probiotics (treat ALS and
neurodegenerative disease)
What are the benefits of GM food? - Correct Answers
✅Increased yield
Increased stress resistance (in droughts)
Decreased pesticide, insecticide, and herbicide use
Increased nutritional value
Increased shelf life (via gene silencing)
Increased resistance to disease
Increase resistance to pesticides
When were GM crops introduced? - Correct Answers
✅1990s
What are the four most common GM crops? - Correct
Answers ✅Soybeans
Corn
Canola oil
Cotton
