Cytosine - Pairs with Guanine , DNA - Deoxyribonucleic acid , Adenine - Pairs with Thymine, Double Helix - James Watson & Francis Crick, Nucleotide - Sugar phosphate backbone & a base, Adenine & Guanine - Purines, Cytosine & Thymine - Pyrimidine ,

Leaderboard

Visual style

Mga Option

I-switch ang template

I-restore ang gi-autosave: ?