I doubt you could even define "Norman genes" properly. How would they be different to say "Danish genes", wich migrated to Britain between the 8th and 10th cent

I doubt you could even define "Norman genes" properly. How would they be different to say "Danish genes", wich migrated to Britain between the 8th and 10th century. After all Normans were also just Scandinavian people who relocated to northern France in the 10th century. The Normans integrated quickly into french (frankish) society by adaptding the language and intermarriage. Furthermore "Norman genes" should also be found in southern Italy, since it was the Normans who founded the Kingdom of Sicily, before it was incoorperated into the Holy Roman Empire.