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NBME 23 Answers

nbme23/Block 1/Question#19

Unlike the DNA polymerases found in Escherichia ...

Mistakes in transcription are not transmitted to progeny

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submitted by keycompany(103),

This question is disguised. What they are really asking is "what is the sole determinant of species survival"? The only answer is the ability to procreate. Because DNA Polymerase has proof-reading activity, progeny will be unaffected by RNA Polymerases lack of proof-reading activity.

ls3076  the phrasing of this explanation doesnt make sense to me. +  
ls3076  oh wait sorry i just read it again. So instead of proofreading how are errors handled with RNA? +  

 +1  upvote downvote
submitted by seagull(348),

https://en.wikipedia.org/wiki/Proofreading_(biology)

Here is a little bit on proofreading.Hope it helps