Which sequences are retained in mature mRNA after splicing?

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Prepare for the Molecular Basis of Inheritance Test. Enhance understanding with multiple choice questions and detailed explanations. Get exam-ready now!

Multiple Choice

Which sequences are retained in mature mRNA after splicing?

Explanation:
During RNA processing, the pre-mRNA contains both coding segments (exons) and noncoding segments (introns). Splicing removes introns and joins the exons in order, so the mature mRNA consists only of exons. Enhancers and promoters are DNA regulatory elements that help control transcription and are not part of the mature transcript. Even though some transcripts can produce noncoding RNAs from enhancers in rare cases, the mature mRNA that exits the nucleus and is translated contains the exons.

During RNA processing, the pre-mRNA contains both coding segments (exons) and noncoding segments (introns). Splicing removes introns and joins the exons in order, so the mature mRNA consists only of exons. Enhancers and promoters are DNA regulatory elements that help control transcription and are not part of the mature transcript. Even though some transcripts can produce noncoding RNAs from enhancers in rare cases, the mature mRNA that exits the nucleus and is translated contains the exons.

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