30 previous ancestors living prior to each ancestor born tomorrow conceived 0-9 months prior to date of birth.
Doesn't matter if the great great grandchild is a son or daughter of two parents. doesn't change if had same 4 grandparents, doesn't change if they shared same 8 great grandparents, nor the 16 great great grandparents born after their 32 great great great grandparents lived between 2 and 3 centuries ago.
Space time continuum of rotations alive cradle to grave between inception of ancestral lineage and extinction of generation gaps added from completion of next rotation on each heartbeat keeps each brain navigating space here now.