What are three generations of close relatives?

Marriage law stipulates that close relatives include lineal blood relatives and collateral blood relatives within three generations. Both men and women regard themselves as contemporary, their parents as contemporary and their grandparents as contemporary. Your uncle's daughter's daughter and you are not close relatives for three generations.

Next of kin:

Will consanguineous marriage have a bad influence on future generations? This question has been debated. In ancient times when human civilization was uncivilized, consanguineous marriage was very chaotic, with not only collateral blood relatives, but also lineal blood relatives. The rulers of ancient Egypt believed that only royal marriage could keep the purity and nobility of royal blood, so most of them were brothers and sisters. However, people draw a conclusion from countless facts: the marriage fertility rate of closely related men and women is low, the mortality rate of offspring is high, and congenital malformation and hereditary diseases often occur.