我的基因，北方汉族，啥意思，有一样的吗

{"result":"O2a2b1a2a1a1","case_id":"HAPLOGROUP_Y","prefix":null,"description":"\u7236\u7cfb\u5355\u500d\u7fa4","color":null,"detail_url":"\/report2\/haplogroup\/y"} 有和我一样的吗，这是啥意思，不懂，南方汉族又是什么基因，我为何没有