| Nucleobase | Nominativ, Singular | nominative case, singular | |
| Nucleobase | Genitiv, Singular | genitive case, singular | |
| Nucleobase | Dativ, Singular | dative case, singular | |
| Nucleobase | Akkusativ, Singular | accusative case, singular | |
| Nucleobasen | Nominativ, Plural | nominative case, plural | |
| Nucleobasen | Genitiv, Plural | genitive case, plural | |
| Nucleobasen | Dativ, Plural | dative case, plural | |
| Nucleobasen | Akkusativ, Plural | accusative case, plural |