SEARCH Articles Figures Tables 10- cytosin Base , guanine Base Watson-Crick Base pairing bases Base pairs Bases Base pair Crick Cytosine Cytosine base pairing Cytosine pairs Guanin Guanine Guanine pairs Guanine-cytosine Guanine-cytosine base pair Guanine-cytosine pairing Watson Watson-Crick base pairing Watson-Crick base-paired Watson-Crick pairing Watson-Crick pairs