I believe the answer is Intron IV, Introns are non-coding regions while exons are the coding regions. In most eukaryotic genes, coding regions (exons) are interrupted by non coding regions (introns). During transcription, the entire gene is copied into a pre-mRNA splicing, introns are removed and exons joined to form a contiguous coding sequence.
Answer:
A eukaryotic cell has a nucleus.
Explanation:
This macromolecule would best describe a a polysaccharide, a polymer of monosaccharides.
