New Study Suggests Horses Originated in North America, Not Europe
L'essentiel
- A new fossil DNA study suggests horses originated in North America millions of years ago.
- An extinct Chinese lineage, the Dalian horse, carried American ancestry to Siberia, influencing modern European horses.
Résumé généré par IA
Pourquoi c'est important
The traditional theory states that horses were introduced to the Americas by European conquistadors. However, a new study challenges this by suggesting an earlier North American origin.
Everyone knows the story: when Spanish conquistadors rode into the New World, Native Americans were stunned by a towering, four-legged creature they had never seen before. Horses, the theory goes, were a European import to the Americas.
But a new fossil DNA study indicates that horses actually originated in North America millions of years ago and only reached Europe thanks to an unexpected genetic middleman in China.
An extinct lineage called the Dalian horse, once dismissed as a local oddity in northeastern China, had a distinctive American ancestry and passed it on to ancient horse populations in Siberia, the researchers say.
That gene flow means the bloodlines that later gave rise to modern European horses picked up their American roots via this Chinese crossroads.
Questions ouvertes
- What specific mechanisms facilitated the gene flow from North America to China?
- How did the Dalian horse lineage specifically contribute to modern European horse breeds?
