Question

Which of the following is the most accurate description of when gene expression is regulated in eukaryotic cells?

Question 15 options:

A. Regulation happens in many points along the process of the Central Dogma (genes to proteins).


B. Regulation only occurs at the time of transcription.


C. Regulation can not occur before proteins are made.


D. Regulation only happens during RNA splicing.

Answer 1

The correct answer is first option A. Regulation happens at several points along the process of central dogma.

Central dogma is the the process of formation of mRNA from DNA and then the formation of proteins from the mRNA.

DNA -> mRNA -> Protein

The first process is transcription and the later is called translation. Regulation occurs at both the process. In fact, regulation is a process to turn certain genes on or off. Certain transcription factors bind to the regulatory region of a gene and regulate the rate of transcription. Processing of RNA and the rate of translation everything is regulated to take care of the amount of protein being formed/needed.