A Long Region of Genomic DNA Is Compared with a CDNA

Multiple Choice

A long region of genomic DNA is compared with a cDNA. The cDNA sequence is identical to segments, but not all, of the genomic DNA sequence. According to these data which of the following statements best describes the genomic DNA?

A) The sequence contains a protein-coding region.
B) The sequence codes for an rRNA.
C) The sequence is an intron.
D) The sequence is a regulatory region.