So you are a (direct) descendant eg of your great great great father (3% DNA), and a non-descendant of your niece (25% DNA) who you are nevertheless related to. That's it. No quasi-descendants. Perha… (View Post)
You have about 25% of the DNA of your maternal grandfather. You are still a direct descendant of him. You are obviously not a direct descendant, or any kind of descendant, of your niece. (View Post)