RNA polymerase II transcribes which types of genes in eukaryotes?

Study for the DNA Structure, Replication, Transcription and Translation Test with flashcards and multiple choice questions. Each question offers hints and explanations. Prepare thoroughly and excel in your exam!

Multiple Choice

RNA polymerase II transcribes which types of genes in eukaryotes?

Explanation:
RNA polymerase II handles the transcription of the genes that encode most proteins and a wide set of non-coding RNAs. It makes pre-mRNA from protein-coding genes, which later gets processed into mature mRNA, and also produces various non-coding RNAs such as small nuclear RNAs (snRNA), microRNAs (miRNA), and long noncoding RNAs (lncRNA). In contrast, ribosomal RNA genes are transcribed by RNA polymerase I, and tRNA genes are transcribed by RNA polymerase III. So the best description is that RNA polymerase II transcribes protein-coding genes (mRNA) and many non-coding RNAs. The other options point to genes handled by the other polymerases, which is why they don’t fit Pol II’s overall transcription role.

RNA polymerase II handles the transcription of the genes that encode most proteins and a wide set of non-coding RNAs. It makes pre-mRNA from protein-coding genes, which later gets processed into mature mRNA, and also produces various non-coding RNAs such as small nuclear RNAs (snRNA), microRNAs (miRNA), and long noncoding RNAs (lncRNA). In contrast, ribosomal RNA genes are transcribed by RNA polymerase I, and tRNA genes are transcribed by RNA polymerase III. So the best description is that RNA polymerase II transcribes protein-coding genes (mRNA) and many non-coding RNAs. The other options point to genes handled by the other polymerases, which is why they don’t fit Pol II’s overall transcription role.

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