Edit: (I feel like I figured out your meaning but will wait for your response)
father-daughter incest or similar
You have a unique female for every generation of your family tree, but males can show up more than once
edit: thought of a situation where you could have a female repeat (a woman and her son.. she'd be mom and grandma to those offspring). so I don't know. YMMV on this one.
Yea. It took me a few minutes but that is where I landed too.
Explain.
Edit: (I feel like I figured out your meaning but will wait for your response)
father-daughter incest or similar
You have a unique female for every generation of your family tree, but males can show up more than once
edit: thought of a situation where you could have a female repeat (a woman and her son.. she'd be mom and grandma to those offspring). so I don't know. YMMV on this one.
Yea. It took me a few minutes but that is where I landed too.