I stopped here after reading an article that 20% of marriages in the world are between 1st cousins and another high percentage in some cultures are uncle-niece marriages so it would be nice to see an analysis of these trees and genetic contribution given any known level with this marriage type.
I stopped here after reading an article that 20% of marriages in the world are between 1st cousins and another high percentage in some cultures are uncle-niece marriages so it would be nice to see an analysis of these trees and genetic contribution given any known level with this marriage type.