The complete set of statistics was then summarized as the number of highly significant tests ( Z > 4) grouped by pairs of X ancient individuals and Z present-day groups summed over all Y present-day groups ( supplementary fig.
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The complete set of statistics was then summarized as the number of highly significant tests ( Z > 4) grouped by pairs of X ancient individuals and Z present-day groups summed over all Y present-day groups ( supplementary fig.