Fusion of a cancer cell and a normal cell using polyethylene glycol yields a hybrid cell that behaves like a normal cell because
A) of recombination between cancer cell and normal cell chromosomes.
B) of dilution of carcinogens in the hybrid cell cytoplasm.
C) of the presence of normal cell tumor suppressor genes and gene products in the hybrid cell.
D) exposure to polyethylene glycol inhibits expression of oncogenes.
E) the normal cell DNA repair machinery reverses all cancer cell gene mutations.
Answer: C
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