Zhejiang was the site of the Neolithic cultures of the Hemudu and Liangzhu. A 2007 analysis of the DNA recovered from human remains in the archeological sites of prehistoric peoples along the Yangtze River shows high frequencies of haplogroup <answer>O1</answer> in the Liangzhu culture, linking them to Austronesian and Tai-Kadai peoples.
What haplogroup did a DNA analysis of the Liangzhu culture reveal?
O1