- Once information is in protein, cannot be retrieved
Can do this:
┌───────────┐
│ ▼
DNA ────▶︎ RNA ────▶︎ Protein
│ ▲
└─────────────────────┘
But not this:
┌────────┐ ┌──────────┐
▼ │ ▼ │
DNA RNA Protein
▲ │
└─────────────────────┘