genealogia dos tempos

Já imaginou saber onde a sua família viveu há 40 mil anos atrás? Agora, aparentemente é possível saber...
Extreme genealogy. A family tree researched by conventional methods can only go back so far before patchy records stymie progress. Now amateur genealogists are turning to DNA testing to trace their ancestry. But how much can this tell us about where we come from?
My family tree is rooted in Scotland, as far back as my mother has managed to trace the branches. But having reached the early 1800s, the trail has gone cold. There are blanks, dead-ends and inconsistencies thanks to lost, absent or incomplete written records.
It's a frustration shared with amateur genealogists the world over. But a record that can never be lost or incomplete is now available to those who wonder "where do I come from?" - their DNA. Thanks to recent breakthroughs in genetic testing, scientists claim they can trace our origins back tens of thousands of years - for a price.

ANCIENT ANCESTORS
- Europeans mostly come from one of seven women
- About half are from Helena, who lived in the Pyrenees 20,000 years ago
- Among non-Europeans, 29 such clans have been identified
- These include 12 among those of African origin
- Four among Native Americans
- And nine among Japanese

ver mais in BBC News