interbreeding

That widespread distribution indicates that the interbreeding happened before Homo sapiens made their final major migration out of Africa and expanded around the planet.

From Science Daily ● Aug. 1, 2026

"Because the two species were capable of producing offspring together, their interactions were likely complex, involving competition, occasional interbreeding and other subtle population dynamics."

From Science Daily ● Apr. 28, 2026

But over hundreds of millennia, human migrations resulted in interbreeding, researchers say.

From Barron's ● Feb. 26, 2026

The earlier timeline means that the three species of humans co-existed on the planet for around 800,000 years, much longer than previously thought, perhaps interacting and interbreeding in that time.

From BBC ● Sep. 25, 2025

The Galápagos-in-a-carton experiment had demonstrated how a population of interbreeding organisms—flies, say—evolves over time.*

From "The Gene" by Siddhartha Mukherjee