The maternal relationship between Betty Murdock and her daughter CC is confirmed by the direct inheritance path of autosomal DNA down to their DNA tested descendant JB.
The segmental (via DNA segment triangulation) and total DNA shared between JB and other confirmed descendants of
John Murray Murdoch/
Ann Steele is consistent with the expected ranges for their respective relationships. Since JB descends from John Murray Murdoch/Ann Steele through Betty Murdock and her daughter CC, the presence of significant shared DNA between JB and other known descendants of John Murray Murdoch/Ann Steele validates the generational links along this maternal line.
This supports the conclusion that DNA was passed from MRCA couple John Murray Murdoch/Ann Steele through Betty Murdock to CC, and ultimately to JB, confirming this direct ancestral connection through multiple generations.