You are investigating an abnormal eukaryotic cell line that makes all of its mRNAs much longer than the mRNAs from normal cells. Intrigued, you examine the proteins in these abnormal cells and note that many of them are either much longer or much shorter than the normal proteins from nonmutant cells. Assuming there is just one mutant defect in these cells, which of the below possibilities is MOST likely?
A)A stop codon is mutated.
B)RNA polymerase does not recognize the terminator sequence.
C)The release factor is defective.
D)The spliceosome is nonfunctional.
E)The enzyme that adds the poly-A tail is defective.

Question

Quizplus · Accepted Answer

The Answer of You are investigating an abnormal eukaryotic cell line that makes all of its mRNAs much longer than the mRNAs from normal cells. Intrigued, you examine the proteins in these abnormal cells and note that many of them are either much longer or much shorter than the normal proteins from nonmutant cells. Assuming there is just one mutant defect in these cells, which of the below possibilities is MOST likely?
A)A stop codon is mutated.
B)RNA polymerase does not recognize the terminator sequence.
C)The release factor is defective.
D)The spliceosome is nonfunctional.
E)The enzyme that adds the poly-A tail is defective.

You Are Investigating an Abnormal Eukaryotic Cell Line That Makes