An internal control region is a sequence of DNA located with the coding region of eukaryotic genes that binds regulatory elements such as activators or repressors.
This region can recruit RNA Polymerase or contribute to splicing.
This stylistic diagram shows a gene in relation to the
double helix
structure of
DNA
and to a
chromosome
(right). The chromosome is X-shaped because it is dividing.
Introns
are regions often found in
eukaryote
genes that are removed in the
splicing
process (after the DNA is transcribed into RNA): Only the
exons
encode the
protein
. The diagram labels a region of only 55 or so bases as a gene. In reality, most genes are hundreds of times larger.