Question

Which of the following is an example of gene regulation?

a. Heat shock factor 1 dissociates from a heat shock protein, and goes to the cell nuclease to ignite transcription of heat shock genes
b. Messenger RNA splicing is slowed because the constituents of the minor spliceosomes are scarce
c. A promoter helps DNA polyemrase bind to a gene sequence
d. Messenger RNA binding proteins inhibit the formation of the ribosomal complex
e. All of the above

Answer 1

Gene regulation can occur at various stages of gene expression, including transcription initiation by heat shock factor 1, RNA splicing, promoter activity, and translation interference by mRNA binding proteins. All options provided in the question are examples of how gene expression is regulated.

Step-by-step explanation:

The example of gene regulation provided in the question describes various mechanisms by which cells control the expression of genes. These include:

• Heat shock factor 1 dissociating from a heat shock protein to initiate transcription of heat shock genes.
• Messenger RNA splicing being influenced by the availability of spliceosomal components.
• A promoter aiding DNA polymerase in binding to a gene sequence for transcription.
• Messenger RNA binding proteins that affect ribosomal complex formation and thus translation.

All of these are examples of gene regulation as they influence the process of gene expression at different stages such as transcription, post-transcriptional modification, and translation.