Biology Practice Problems Eukaryotic Gene Regulation Practice Problems Solution: Methylation of DNA involves the addition of a meth...

Solution: Methylation of DNA involves the addition of a methyl group to nucleotide bases. Which of the following does not apply?A. Methylation of cytosine forms methyl-cytosine.B. Methylation affects the three-dimensional structure of DNA.C. Methylation has no effect on the structure of DNA.D. Methylation affects gene expression.

Problem

Methylation of DNA involves the addition of a methyl group to nucleotide bases. Which of the following does not apply?

A. Methylation of cytosine forms methyl-cytosine.

B. Methylation affects the three-dimensional structure of DNA.

C. Methylation has no effect on the structure of DNA.

D. Methylation affects gene expression.

Solution

DNA methylation is an alternative to histone modification for the regulation of gene expression. The usual target of this methylation process is cytosine.

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