The maternal relationship between Mary Lusetta Polly Pennington and her daughter
Thelma Bee Coppick is confirmed by the direct inheritance path of autosomal DNA down to their DNA tested descendant AF.
The segmental (via DNA segment triangulation) and total DNA shared between AF and other confirmed descendants of
James Chapman/
Ruth Bertha Hammer is consistent with the expected ranges for their respective relationships. Since AF descends from James Chapman/Ruth Bertha Hammer through Mary Lusetta Polly Pennington and her daughter Thelma Bee Coppick, the presence of significant shared DNA between AF and other known descendants of James Chapman/Ruth Bertha Hammer validates the generational links along this maternal line.
This supports the conclusion that DNA was passed from MRCA couple James Chapman/Ruth Bertha Hammer through Mary Lusetta Polly Pennington to Thelma Bee Coppick, and ultimately to AF, confirming this direct ancestral connection through multiple generations.