Obviously you fail to understand that tribe Levites were scattered though the other tribes of Israel. After the dispersion out of Israel they intermarried with the tribes. The priesthood had disappeared. Keep in mind this occurred over 2000 years. Their genetic marker became part of the Jewish DNA. Go back to the drawing board and try again.
Why do you insist on being so bone-headed and Antichristian? Your genetic claim only applies to one extended German family, contracting your claims. Your link refutes you. I quoted it for you. Lean to read. Learn to think. Get to know the teachings of Christ.