Which portions of pre-mRNA are cut out and discarded during processing?

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Multiple Choice

Which portions of pre-mRNA are cut out and discarded during processing?

Explanation:
During RNA processing in eukaryotes, the initial transcript includes both coding regions (exons) and noncoding regions (introns). The cell performs splicing, removing introns and joining the exons to produce mature mRNA that can be translated into protein. Introns are transcribed but not translated, and they’re discarded so the final message carries only the exons. Promoter and terminator are DNA elements involved in starting and ending transcription, not parts of the processed RNA, so they aren’t the portions removed during pre-mRNA processing.

During RNA processing in eukaryotes, the initial transcript includes both coding regions (exons) and noncoding regions (introns). The cell performs splicing, removing introns and joining the exons to produce mature mRNA that can be translated into protein. Introns are transcribed but not translated, and they’re discarded so the final message carries only the exons. Promoter and terminator are DNA elements involved in starting and ending transcription, not parts of the processed RNA, so they aren’t the portions removed during pre-mRNA processing.

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