Apastamba and BodhAyana are the two prominent SUtras of those who are born in the family of KrishNa yajurvedis.
The SUtras are named after the great Rishis Apastamba and BodhAyana
Though both SUtras follow KrishNa Yajurveda texts, the two grihya SUtras are different in prayoga in certain respects.
As the SUtra is determined by birth, one has to follow the SUtra belonging to his family while performing the various Vedic karmas.