Humans generally leave more descendants if they marry someone who is not too closely related. So highly inbred royal families experience many genetic disorders like hemophilia. Inbreeding is connected ...

Additionally, researchers found genetic confirmation that entire families had been sacrificed together as part of sunjang, the ritualistic sacrifice of servants to be buried alongside their superiors ...

Sex, mating systems, inbreeding, and outbreeding / Nickolas M. Waser -- Theoretical perspectives. Theory and data pertinent to the relationship between heterozygosity and fitness / Jeffry B. Mitton -- ...

Modern humans and Neanderthals were interacting 100,000 years earlier than previously thought, according to researchers who used CT scans and 3D mapping to study the bones of a child they believe was ...