Ancestry,
Source Galactic Ancestries pg. 9

Your ancestry has a powerful connection to one or more magical traditions.

• Choose one 1st‑rank spell from your ancestry’s magic entry.
  You can cast that spell once per day as an innate spell at 1st rank.

• The spell’s tradition (arcane, divine, occult, or primal) is specified per ancestry in its Standardized Ancestry Feats listing; Ancestral Magic always uses that tradition.

When you take Ancestral Magic as higher‑level ancestry feats, it scales:

• If this is your 9th‑level ancestry feat, choose a 3rd‑rank or lower ancestry spell and cast it once per day as a 3rd‑rank innate spell.

• If this is your 13th‑level ancestry feat, choose a 5th‑rank or lower ancestry spell and cast it once per day as a 5th‑rank innate spell.

• If this is your 17th‑level ancestry feat, choose a 7th‑rank or lower ancestry spell and cast it once per day as a 7th‑rank innate spell.

Special
If your ancestry lists multiple spells in its magic entry, you can select this feat more than once; each time, you must choose a different spell.
As a standardized ancestry feat, Ancestral Magic replaces its generic “Ancestry” trait with your actual ancestry trait (Android, Vaelen/Elf, Vividi/Gnome, etc.).

In practice, ancestries define which spells and traditions they use. For example, the Elf entry in Galactic Ancestries offers a primal menu that might include wisp ally, verdant code, discharge, and overload systems at different ranks.