Where does “*ja” come from?

*ja (Proto-Finno-Ugric) comes from Proto-Germanic jahw, from Proto-Germanic -hw, from Proto-Germanic -hwe, from Proto-Indo-European -kʷe — and; Forms distributives from interrogatives.

Ancestry of “*ja”, step by step

StepLanguageWordMeaning
1Proto-Germanicjahwand, also
2Proto-Germanic-hwand; Forms distributives from interrogatives
3Proto-Germanic-hwe
4Proto-Indo-European-kʷeand; Forms distributives from interrogatives

Words derived from “*ja

Every word from Proto-Indo-European -kʷeEvery word from Proto-Germanic -hwEvery word from Proto-Germanic jahw