Refers to traditions in human societies, often linked with lineage and tribal affiliation.

Cultural Practice

Promotes health by reducing the risk of inheriting genetic problems within a closed group.

Genetic Diversity

It aims to strengthen ties and foster understanding between different groups by encouraging outward marriage.

In plants and animals, it results in offspring with varied genetic makeup, which can improve survival.

Particularly in controlled breeding programs, it prevents the issues associated with breeding closely related organisms.