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Originally Posted by Johannes de León
Manji, which markers have been used on those graphics?
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Y-Chromosome STRs.
That's a pretty good match actually between Portugal and Ireland.
But that's no surprise, as Y-chromosomes between Ireland and Portugal do not show any statistical differences. In other words, both nations have a very similar paternal history.
The main difference between the countries is mtDNA. Portugal's mtDNA is obviously more southern European, while Ireland's is more northern.