Archive · 9 Dec 2025
Study reveals 100,000 years of human isolation in southern Africa
A new study looked at the DNA of ancient people who lived in southern Africa a long time ago.
These people lived in isolation for about 100,000 years, which means they didn't mix with other groups very much.
This isolation made their DNA very different from people today.
The study found that these ancient people had unique genetic traits that helped them survive, like genes for better kidney function and brain development.
The researchers think that humans evolved in different ways in different places, not just one place.
This study helps us understand how humans became the way we are today.
A genetic analysis of 28 ancient individuals from southern Africa suggests humans lived in isolation for about 100,000 years.
The study found unique genetic signatures in ancient southern Africans that are not seen in modern humans.
The region remained largely cut off from the rest of the continent until around AD 550.
The findings challenge earlier theories suggesting long-term genetic links between eastern, western, and southern Africa.
Southern Africans from this period contain half of all human genetic variation, with genes linked to kidney function and neuron growth.
- Who
- Researchers led by Mattias Jakobsson of Uppsala University
- What
- A genetic analysis of ancient individuals from southern Africa
- When
- The study was published on December 3, based on remains dating from 225 to 10,275 years old
- Where
- Southern Africa, specifically south of the Limpopo river
- Why
- To understand the genetic diversity and evolution of early humans
- Study Focus
- Genetic analysis of 28 ancient individuals from southern Africa
- Time Period
- Between 225 and 10,275 years old
- Key Finding
- Humans lived in genetic isolation for approximately 100,000 years
- Ancestry Component
- Ancient southern African ancestry component
- Genetic Mixing
- Evidence of genetic mixing with outsiders around AD 550
- Population Trends
- Large population 200,000 years ago, began to shrink around 50,000 years ago
- Genetic Variation
- Southern Africans contain half of all human genetic variation
- Key Variants
- Genes linked to kidney function and neuron growth