Complete the following sentence. An intron is _______________________

A. a protein that is clipped out post- translationally
B. RNA that is removed during the processing of an RNA molecule and remains inside the nucleus
C. part of an intact, mature mRNA that leaves the nucleus
D. a transfer RNA that binds to the codon
E. a series of amino acids at the end of a new polypeptide that directs transcription to the ER


Answer: B

Biology & Microbiology

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