DNA Structure and Replication
What is the only common methylation in the DNA of eukaryotes?

Cytosine in CpG dinucleotides
Adenosine in GpA dinucleotides
None of these
Guanosine in ApGpA trinucleotides

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DNA Structure and Replication
The higher order structure of DNA shows symmetry, whereas the higher order structures of most proteins do not. Why isn't protein shape more regular like DNA?

The many different amino acid R groups on proteins confer many different shapes.
DNA has one main function in cells whereas proteins have many.
Some S amino acids cause proteins to bend; others cause protein to flatten.
All of these

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