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The Cancer Gene Ras Produces MRNA Containing an Extra Exon

Question 37

Multiple Choice

The cancer gene ras produces mRNA containing an extra exon that includes a number of UAA codons. Cancer cells produce ras mRNA missing this exon. This mistake most likely is due to a mistake by


A) UV radiation.
B) DNA polymerase.
C) snRNPs.
D) photolyases.
E) a chemical mutagen.

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