Paternal and maternal relationships are confirmed by an AncestryDNA test match between Mark Adams and his second cousin. Their MRCAs are their great grandparents, George Jefferson Tucker and Debbie Catherine Bennett. Predicted relationship from AncestryDNA: 2nd Cousins, based on sharing 253 cM across 10 segments; Confidence: Extremely High.
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DNA Connections
It may be possible to confirm family relationships with Porter by comparing test results with other carriers of his Y-chromosome or his mother's mitochondrial DNA.
However, there are no known yDNA or mtDNA test-takers in his direct paternal or maternal line.
It is likely that these autosomal DNA test-takers will share some percentage of DNA with Porter: