Which part of a gene is expressed and included in mature mRNA?

Study for the Principles of Biology Exam 2. Enhance your understanding with multiple-choice questions, detailed explanations, and study tips. Ace your biology test!

Multiple Choice

Which part of a gene is expressed and included in mature mRNA?

Explanation:
Exons are the portions of a gene that are expressed and retained in the mature mRNA after RNA splicing. In eukaryotic transcription, the initial transcript (pre-mRNA) contains both exons and introns. The spliceosome removes introns and joins the exons together, producing mature mRNA that will be translated. Promoters and enhancers are regulatory DNA elements that control transcription initiation and rate; they are not transcribed into mRNA. Some genes can undergo alternative splicing to include or exclude different exons, but the pieces that remain in the mature mRNA are the exons.

Exons are the portions of a gene that are expressed and retained in the mature mRNA after RNA splicing. In eukaryotic transcription, the initial transcript (pre-mRNA) contains both exons and introns. The spliceosome removes introns and joins the exons together, producing mature mRNA that will be translated. Promoters and enhancers are regulatory DNA elements that control transcription initiation and rate; they are not transcribed into mRNA. Some genes can undergo alternative splicing to include or exclude different exons, but the pieces that remain in the mature mRNA are the exons.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy