The most common mechanism for the regulated expression of human genes during fetal development occurs at which of the following levels?
A) degradation of the protein product
B) excision of introns from precursor RNA
C) initiation of protein synthesis
D) initiation of RNA synthesis
E) modification of the newly synthesized protein

Question

Quizplus · Accepted Answer

The initiation of RNA synthesis, or transcriptional regulation, is the primary mechanism for controlling gene expression during fetal development. This process determines which genes are transcribed into RNA, thus influencing the proteins that will be produced.  In eukaryotic cells, the ability to express biologically active proteins can be regulated at several different stages from the activity of the gene to the final functional protein. Transcriptional initiation is the most important mode for control of eukaryotic gene expression.

The Most Common Mechanism for the Regulated Expression of Human