43. Which of these statements correctly describes genetic engineering?
(A) Only breeding from crop plants that are resistant to pests.
(B) Using yeast to produce ethanol.
(C) Altering the DNA in crop plants so that they are resistant to herbicides.
(D) Production of insulin in the pancreas.
(E) Grafting branches from one fruit tree onto another.

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統計: A(0), B(0), C(4), D(0), E(0) #3853348