>>508566931 (OP)In a study (Zahery 2011), the frequency of Q is 1.9% (3/154: all Q-M378) in Iraqis (x Marsh Arabs), and 2.8% (4/143: 1 Q-M25, 3 Q-M378) in Marsh Arabs who are known as the descendants of ancient Sumerians. Approximately 2.5% (4/157: 3 Q*, 1 Q-M346) of males in Saudi Arabia belong to haplogroup Q.