Regulatory elements
A) are always found close to the gene they regulate.
B) control the rate of mRNA production.
C) are found only in prokaryotes.
D) have no effect on phenotype.

Question

Quizplus · Accepted Answer

Regulatory elements control the rate of mRNA production by binding to specific proteins or transcription factors, which then either promote or inhibit the transcription of the associated gene. These elements can be found both upstream and downstream of the gene they regulate, as well as in introns and even within the transcribed region of the gene. Regulatory elements are present in both prokaryotes and eukaryotes and have a significant effect on phenotype.

Regulatory Elements