题目内容

________ is the first genetically modified animal to be approved for human consumption.

A. Salmon
B. Cow
C. Sheep
D. Pig

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China was the first country to commercialize a transgenic crop in 1993 with the introduction of virus-resistant __________.

A. cotton
B. tobacco
C. soybean
D. tomato

Inmostcases,theaimofgeneticengineeringistointroduceanewtraittotheplantwhichdoesnotoccurnaturallyinthespecies,whichinclude:

A. resistancetocertainpests,diseases,orenvironmentalconditions
B. reductionofspoilage
C. resistancetochemicaltreatments(e.g.resistancetoaherbicide)
D. improvingthenutrientprofileofthecrop

Genetically modified virus is a virus that has gone through genetic modification for various:

A. biomedical purposes
B. health purposes agricultural purposes
C. bio-control purposes
D. technological purposes

Viruses that have been used for gene therapy are:

A. adenovirus
B. lentivirus
C. retrovirus
D. herpes simplex virus

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