Answer: Cytosine is methylated resulting in 5-methylcytosine. Then the gene expression will decrease.
Explanation: To find the answer, we need to know more about the methylation of cytosine.
What is methylation of cytosine?
- Methylation means the addition of a methyl group on a substrate of an atom.
- It's a form of alkylation, here a methyl group replaces a hydrogen atom.
- Methylation of cytosine occurs at CpG palindrome in DNA.
- When cytosine is methylated to produce 5- methyl cytosine, which results in a decrease in gene expression.
Thus, we can conclude that, Cytosine is methylated resulting in 5-methylcytosine. Then the gene expression will decrease.
Learn more about the methylation of cytosine here:
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