How do we know that all living people belong to the species Homo sapiens?

Question

Quizplus · Accepted Answer

The fact that people from all populations can successfully interbreed is an indication that they belong to the same species. Throughout history, humans have migrated and dispersed to various parts of the world, leading to the development of different physical features and variations in genetic makeup. However, despite these variations, all humans can interbreed and produce fertile offspring, which reinforces their classification as belonging to the same species. Blood type and physical appearance are not definitive indicators of belonging to a particular species, and historical documentation provides limited information on the origin and evolution of species.

How Do We Know That All Living People Belong to the Species