Bloodline mutations and multiple first level bloodline abilities.

[Silas Hawkwinter]

Some sorcerer bloodlines grant two level one abilities, what happens if you take a bloodline mutation? Are both abilities replaced or just one?

Blood Havoc:

Whenever you cast a bloodrager or sorcerer spell that deals damage, add 1 point of damage per die rolled. This benefit applies only to damaging spells that belong to schools you have selected with Spell Focus or that are bloodline spells for your bloodline.
This ability replaces the sorcerer’s 1st-level bloodline power or the bloodrager’s 4th-level bloodline power.

[Nefreet]

What Bloodline grants two 1st level abilities?

[Silas Hawkwinter]

Heh looks like I need more coffee! I don't think there are any. :_)