DNA reveals gene flow between Eurasian and North American
New research of ancient DNA from horse fossils found in North America and Eurasia shows that horse populations on the two continents remained connected through the Bering Land Bridge, moving back and forth and interbreeding multiple times over hundreds of thousands of years.
Let's deep down to the core part where I will discuss everything:
what was studied upon-
Mitochondrial genomes from ancient Eurasian and American horse(Equus species) bone fossils, currently curated in the Earth Sciences Collection at the University of Alaska Fairbanks Museum.
Aims of the study-
The importance of connectivity among large arctic mammal species populations in keeping genetic diversity, reducing possibilities of extinction.
Obstructions against the connectivity.