Question

vertebrate cells possess a protein that binds to clusters of 5 - methylcytosine and ensures the gene will stay in the \off\ position. this control of gene regulation is a result of
multiple choice
enhancer expression.
operator suppression.
methylation.
translation.
promoter expression.

Explanation:

Methylation is a process where a methyl group is added to DNA. In vertebrate cells, when a protein binds to clusters of 5 - methylcytosine, it can turn genes off. Enhancer expression promotes gene expression, operator suppression is related to operon systems in prokaryotes, translation is the process of making proteins from mRNA, and promoter expression is related to the start - site of transcription. Since the question mentions 5 - methylcytosine and gene regulation to the "off" position, it is related to methylation.

Answer:

C. methylation