Among the possible errors listed below, which would prevent an mRNA with the correct sequence from being translated appropriately?
A)The 5' cap was not added.
B)The DNA sequence was incorrect.
C)The poly(A)tail was not formed.
D)Either the 5' cap was not added or the poly(A)tail was not formed.
E)None of the other answer options is correct.

Question

Quizplus · Accepted Answer

Without the 5' cap, the mRNA is not recognized by the ribosome for translation initiation. Without the poly(A) tail, the mRNA can be degraded quickly in the cytoplasm before translation is completed. Both of these modifications are necessary for proper translation. The DNA sequence being incorrect would result in a faulty mRNA sequence, but this error would not affect the translation process itself. Therefore, choice D is the best answer.

Among the Possible Errors Listed Below, Which Would Prevent an MRNA