Which one of the following sequence is not expressed in a mature messenger RNA of a segment of a eukaryote gene?
In eukaryote organisms, a structural gene usually consists of several coding regions which are known as exons that are separated by non-coding regions which are introns / intervening sequences. They do not express. Ref: Human Molecular Biology: An Introduction to the Molecular Basis of Health and Disease, 2003, Page 41
Intron
Exon
Plasmid
TATA box