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

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

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DNA Structure and Replication
Nucleosome is

an hexamer of three histones without H1 protein
an octamer of four histones without H1 protein
an octamer of four histones with H1 protein
an hexamer of three histones with H1 protein

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DNA Structure and Replication
In DNA, nucleotides are covalently joined together by

2', 5' phosphodiester bonds to form a repetitive sugar-phosphate chain
3', 5' phosphodiester bonds to form a repetitive sugar-phosphate chain
2', 3' phosphodiester bonds to form a repetitive sugar-phosphate chain
3', 4' phosphodiester bonds to form a repetitive sugar-phosphate chain

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