The maternal relationship between Sandra Lee Irwin and her DNA tested daughter MM is confirmed by the direct inheritance path of autosomal DNA.
The segmental (via DNA segment triangulation) and total DNA shared between MM and other confirmed descendants of
John Albertson/
Elizabeth Hunter is consistent with the expected ranges for their respective relationships. Since MM descends from John Albertson/Elizabeth Hunter through Sandra Lee Irwin, the presence of significant shared DNA between MM and other known descendants of John Albertson/Elizabeth Hunter validates the generational links along this maternal line.
This supports the conclusion that DNA was passed from MRCA couple John Albertson/Elizabeth Hunter through Sandra Lee Irwin to MM, confirming this direct ancestral connection through multiple generations.