Two of the genes were associated with producing light skin - SLC24A5 and SLC45A2.
They
found that the remains of early hunter gatherers who lived in Spain,
Luxembourg and Hungary around 8,500 years ago, they lacked these key
gene variants.
However,
in the remains of hunter gatherers that had lived in Motala 7,700 years
ago, they carried both variants of SLC24A5 and SLC45A2 that produced
lighter skin.
They also carried another gene known to produce blue eyes in Europeans.