An MRNA Sequence for a Gene of Interest Is Extracted

question 205

Multiple Choice

An mRNA sequence for a gene of interest is extracted from a eukaryotic cell.The length of sequence between the start and stop codons is much shorter than that found in the genomic sequence of the gene.Which is the best explanation for this difference?

• A) Mature eukaryotic mRNA has no modified guanosine cap.
• B) Mature eukaryotic mRNA does not bind a repressor molecule, thus making it smaller.
• C) Mature eukaryotic mRNA does not contain any intron sequences.
• D) Mature eukaryotic mRNA is not polyubiquitinated.
• E) A mutation in the promoter has altered the transcription of the gene.

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