 The frequency of this haplogroup is about 5% higher than its frequency in other Asian groups such as Koreans, Manchus, and other Northeast Asians.The Japanese DNA sequence consists of 24.2% Korean, 16.1% Okinawa, 4.8% Uniquely Japanese, 25.8% Chinese, 8.1% Ainu, and 21% Unidentified.The Ainu people were the key to the Japanese genetic origins because researchers found an exact DNA match with the Ainu and the Jōmon Japanese to conclude the Ainu rooted all the way back to the Jōmon.