From The Vault

Perk Mutate! Fallout, Fallout 2, Fallout Tactics requirements: Level 9 ranks: 1 benefit: Change one trait for another

Mutate! is a Fallout, Fallout 2 and Fallout Tactics perk.

The radiation of the wasteland has changed you! One of your Traits has mutated into something else...

Notes:

• If you chose only one Trait when creating the character, you can only exchange it for a new one. You cannot fill the empty slot.
• In unpatched Fallout 1, you could exchange Gifted for another Trait and still keep the Character Points.

See also: Mutations and their causes.