Haplogroup D-M55

Among the subgroups of Haplogroup D, the ancestor of D-M55 went eastward to reach the Japanese archipelago. According to Michael F. Hammer of the University of Arizona, haplogroup D originated near the Tibetan Plateau and migrated into Japan where it eventually became D-M55. Mitsuru Sakitani said that Haplogroup D1 came from Tibet to northern Kyushu via the Altai Mountains and the Korean Peninsula more than 50,000 years ago, and Haplogroup D-M55 (D1a2a) was born in the Japanese archipelago. ==Frequency==

The average frequency in Japanese is about 30%. • Tokyo: 40.4% (21/57 = 36.8% JPT, 23/52 = 44.2% 1/20 = 5.0% Iriomote, 13/38 = 34.2% Miyako, • Kyushu: 35.0% (8/31 = 25.8% Fukuoka Prefecture, 470/1285 = 36.6% Miyazaki Prefecture, 58/151 = 38.4% Kagoshima Prefecture, 9/31 = 29.0% Shikoku,) • West Timor: 1/497 = 0.2%（Tumonggor et al. 2014） ==Ancient DNA==

A Jōmon period man excavated from Funadomari remains (about 3,800 - 3,500 YBP) in Rebun Island in Hokkaido belongs to haplogroup D1a2a2a (D-CTS220). The analysis of a Jōmon sample (Ikawazu) and an ancient sample from the Tibetan Plateau (Chokhopani) found only partially shared ancestry, suggesting a positive genetic bottleneck regarding the spread of haplogroup D from an ancient population related to the Tibetan Chokhopani sample (and modern Tibeto-Burmese groups). ==Phylogenetic tree==

By ISOGG Tree (Version: 14.151). • DE (YAP) • D (CTS3946) • D1 (M174/Page30, IMS-JST021355, Haplogroup D-M174) • D1a (CTS11577) • D1a1 (F6251/Z27276) • D1a1a (M15) Tibet • D1a1b (P99) Tibet, Mongol, Central Asia • D1a2(Z3660) • D1a2a (M64.1/Page44.1, M55) Japan(Yamato people、Ryukyuan people、Ainu people) • D1a2b (Y34637) Andaman Islands（Onge people, Jarawa people） • D1b (L1378) Philippines • D2 (A5580.2) Nigeria, African American, Saudi Arabia, Syria == References ==