Sequences of Genomic DNA, and Its Corresponding Messenger RNA (MRNA)

question 128

Multiple Choice

Sequences of genomic DNA, and its corresponding messenger RNA (mRNA) , are often compared to obtain valuable information for genome annotation. Why is this comparison useful?

• A)The open reading frame of the mRNA includes the introns of the genomic DNA.
• B)The exclusion of introns in mRNA reveals the intron-exon structure of many protein coding genes.
• C)The genomic DNA is longer because the exons are spliced together.
• D)The genomic DNA is shorter because the exons are spliced together.
• E)The sequences of genomic DNA and mRNA are identical, which serves as independent validation.

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