父系单倍群表达方成

{"result":"O1b1a1a1a1b1a1a","case_id":"HAPLOGROUP_Y","prefix":null,"description":"\u7236\u7cfb\u5355\u500d\u7fa4","color":null,"detail_url":"\/report2\/haplogroup\/y"} 请问大咖们，O1b1a1a1a1b1a1a对应魔方的父亲单倍群O系列下的哪个分支？