So far, I believe the answer is E, 1 & 2, because from some sources I\'ve found,

Question

So far, I believe the answer is E, 1 & 2, because from some sources I've found, it seems that RNA transcription has an even higher error rate than the one mentioned here. Looking for other opinions.

RNA synthesis differs from DNA synthesis in the followings ways:
1 - RNA synthesis does not require a primer but DNA synthesis does.
2 - RNA polymerase does not have proofreading ability, but DNA polymerase does.
3 - The error rate of RNA synthesis is 100 to 1000 times greater than that in DNA synthesis.
4 - RNA synthesis occurs in the 3' to 5' direction whereas DNA synthesis occurs in the 5' to 3' direction.

A. 1, 2, 3, and 4

B. 1, 3, and 4

C. 2, 3, and 4

D. 1, 2, and 3

E. 1 and 2

Explanation / Answer

The answer is D.

All 1, 2 and 3 are right

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