Methylation regulates transcription
a. via the addition of a methyl group to cytosine bases of DNA.
b. via the addition of a methyl group to cysteine residues on RNA polymerase II.
c. via the addition of a methyl group to cysteine bases of DNA.
d. via the addition of a methyl group to cytosine residues on RNA polymerase II.
e. by interfering with the chromatin remodeling process.
A
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A ________ group consists of the most recent common ancestor and some of its descendants.
Fill in the blank(s) with the appropriate word(s).