The central dogma,
as functions you compose.

der Strang — the written strand

Sequences as typed data: DNA, RNA, protein. You write the biology down as text — name a base, spell a strand — and the language fills in the chemistry and draws it. The central dogma is just functions you compose: complement, transcribe, translate. The chemistry is known, not declared.

Two registers keep it honest — computed, the chemistry that's exact and checkable against any database, and declared, the parts the tool can't derive, which you state as a claim. So a diagram is something you can check, not a picture someone drew.