On the Chromosome Browser page, the matching regions are half-matching DNA Segments that you share with your match. Each of your autosomal chromosomes comes half from your mother and half from your father.

Comparison Andrew Tiptop to Parents
Name Matching on Chromosome 12
Match 1 Match 2 Non-Match
Peter Tiptop
Martha Pynee

For example, Andrew Tiptop has Family Finder tested himself and his parents, Peter and Martha (Pynee) Tiptop. On Andrew’s Chromosome Browser page, he matches both parents.

Comparison Martha Pynee to son Andrew
Name Matching on Chromosome 12
Match 1 Non-Match
Andrew Tiptop
Comparison Peter Tiptop to son Andrew
Name Matching on Chromosome 12
Match 1 Non-Match
Andrew Tiptop

On Martha’s Chromosome Browser page, she matches Andrew.

Likewise, on Peter’s Chromosome Browser page, he matches Andrew.

As Andrew’s parents are unrelated, Peter does not have Andrew’s mother on his match list, and Martha does not have Andrew’s father on her match list.