It is highly unusual for humankind overall, this long period in most parts of Eurasia saw waves and waves of migrations. But in this specific region of Africa, a group of people stayed the same and didn’t produce offspring with outsiders for thousands of years.
Well, they did produce offspring with outsiders. The article mentions others coming in. The genomes are “related” between the three time periods studied.
What didn’t happen was a total replacement by people unrelated to the previous dwellers.
It is highly unusual for humankind overall, this long period in most parts of Eurasia saw waves and waves of migrations. But in this specific region of Africa, a group of people stayed the same and didn’t produce offspring with outsiders for thousands of years.
Well, they did produce offspring with outsiders. The article mentions others coming in. The genomes are “related” between the three time periods studied.
What didn’t happen was a total replacement by people unrelated to the previous dwellers.