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A comment on Ancient-DNA Study Identifies Originators of Indo-European Language Family. Parent comment

Re:Ancient-DNA Study Identifies Originators of Indo-European... by wqaatwt on Tuesday February 11, 2025 @01:32PM (#43016382)
If in earlier periods a specific haplogroup is concentrated in specific relatively small area but after a couple of centuries it can be found across the entire continent that seems like a good indicator.
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Re:Ancient-DNA Study Identifies Originators of Indo-European... by kragen on Tuesday February 11, 2025 @09:06PM (#43020973)
That's why I was asking if this conclusion is based on grave DNA data. How else do you know where haplogroups were in earlier periods, other than by already knowing the information about historical migrations and population replacements that we're trying to derive in the first place?
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