分子人类学研究认为东亚的Y染色体基因组主要可以分为两类，一类为五万年前

Molecular Anthropology think East Asia Y-chromosome genome can be divided into two categories, one for 50,000 years ago to the old Asian gene Asia, mainly for the C line and D line, one is to 30,000 years ago new Asian genes in Asia, mainly N and O based system. Race brown race and Negrito are living in equatorial regions to adapt old Asian tropical climate formed. North of the Mongolian family, Tungus ethnic Ainu in Hokkaido, Japan, and also the old Asian gene-based, but their physical characteristics and the brown race is completely different, suggesting that the ethnic differences only adapt product of the environment.

Molecular anthropology studies suggest that the Y chromosome genome in East Asia can be divided into two main categories, one is the old Asian gene that came to Asia 50,000 years ago, the C-line and the D-line, and the new Asian gene that came to Asia 30,000 years ago, mainly the N-line and o-line. Both the brown species and the Niglitor were the species formed by the old Asians living in the equatorial region to adapt to the tropical climate. The Mongolian, Tungus and Japanese Hokkaido Ainu people in North Asia are also predominantly old Asian genes, but their physical characteristics are completely different from that of brown sons, suggesting that ethnic differences are only the product of adaptation to the environment.

According to the research of molecular anthropology, the genome of Y chromosome in East Asia can be divided into two categories: one is the gene of old Asians who came to Asia 50000 years ago, mainly c-line and D-line; the other is the gene of new Asians who came to Asia 30000 years ago, mainly n-line and O-line. Both brown people and Negritos are people formed by old Asians living in the equatorial region to adapt to the tropical climate. Mongolian, Tungusic and Ainu in Hokkaido, Japan are also genetically related to the old Asians, but their physical features are totally different from those of brown people, which shows that the ethnic differences are only the products of adaptation.<br>