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My maternal haplogroup
Here's some information from 23andMe about maternal haplogroup:
Your maternal line stems from haplogroup B2. B2 is actually a branch of haplogroup B4, which spread northward through East Asia, perhaps along the coast. The common ancestor of haplogroup B2 was likely born in the northeastern reaches of Siberia nearly 17,000 years ago. At the peak of the Ice Age, between about 20,000 and 15,000 years ago, massive glaciers covered much of North America and Eurasia. So much water was locked up in the ice sheets that global sea level dropped 300 feet, creating connections between land masses that are isolated by wide straits or passages today. One of those connections was the Bering land bridge, an ice-free but frigid corridor hundreds of miles wide that linked Siberia and Alaska. Mammoths, bison, caribou and other Ice Age mammals roamed back and forth between Siberia and Alaska during this period, as did a few hardy hunter-gatherers who could cope with the region's extreme climate.
The maternal lines of B2 likely expanded and diversified in Beringia as humans gradually crossed this bridge into the American continents. Once across the bridge, members of B2 expanded rapidly down the western coast to South America before heading inland. This great expansion lead to the formation of diverse regional subgroups, which can be found today among a diverse set of populations in western, central and southeastern North America. The haplogroup is found among the Pawnee, Cherokee and Seminole and is strikingly common today among southwestern tribes such as the Pima, Yuma and Washo.
Here's some information from 23andMe about maternal haplogroup:
Your maternal line stems from haplogroup B2. B2 is actually a branch of haplogroup B4, which spread northward through East Asia, perhaps along the coast. The common ancestor of haplogroup B2 was likely born in the northeastern reaches of Siberia nearly 17,000 years ago. At the peak of the Ice Age, between about 20,000 and 15,000 years ago, massive glaciers covered much of North America and Eurasia. So much water was locked up in the ice sheets that global sea level dropped 300 feet, creating connections between land masses that are isolated by wide straits or passages today. One of those connections was the Bering land bridge, an ice-free but frigid corridor hundreds of miles wide that linked Siberia and Alaska. Mammoths, bison, caribou and other Ice Age mammals roamed back and forth between Siberia and Alaska during this period, as did a few hardy hunter-gatherers who could cope with the region's extreme climate.
The maternal lines of B2 likely expanded and diversified in Beringia as humans gradually crossed this bridge into the American continents. Once across the bridge, members of B2 expanded rapidly down the western coast to South America before heading inland. This great expansion lead to the formation of diverse regional subgroups, which can be found today among a diverse set of populations in western, central and southeastern North America. The haplogroup is found among the Pawnee, Cherokee and Seminole and is strikingly common today among southwestern tribes such as the Pima, Yuma and Washo.