The 8,800-Year-Old Man Found 1,000 Feet Inside A Colorado Cave — And The DNA Test That Linked Him To A Native American Founder Lineage
Haplogroup B And What It Means
The mitochondrial DNA recovered from the Hourglass Cave man belonged to haplogroup B.
To understand why this mattered, some background on what mitochondrial haplogroups are and how they relate to population history is necessary.
Mitochondrial DNA — the genetic material in the mitochondria, inherited exclusively through the maternal line — accumulates mutations over time at a roughly predictable rate.
These mutations are passed from mother to children, and from daughters to their children, in a lineage that can be traced back through time.
Specific patterns of mutations define groups of related individuals who all descend from a common maternal ancestor in whom those mutations first appeared.
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