|Cytosine and thymine are ____ nucleotide bases (two rings).
|Adenine and guanine are ____ nucleotide bases (one ring).
|DNA is duplicated by semiconservative ____.
|In DNA, guanine forms three hydrogen bonds with ____.
|During ____, mRNA is decoded to produce a specific protein.
|DNA contains thymine, whereas RNA contains ____.
|In DNA, adenine forms two hydrogen bonds with ____.
|During ____, a DNA template is used to produce RNA.