Schneider H, Salzano F M
Hum Genet. 1979;53(1):101-5. doi: 10.1007/BF00289458.
The Gm types of 515 inhabitants of Belém and 395 inhabitants of Porto Alegre, Brazil were studied in an attempt to quantitatively estimate ethnic parental contributions. The people from Belém can be characterized as 24% black, 22% Indian, and 54% Caucasian. The Porto Alegre blacks seem to have inherited as much as 53% of their genes from Caucasian ancestors, while the whites living there have inherited 8% of their genes from African ancestors. The admixture values obtained for Belém are very similar if just the Gm system is considered or it plus seven other loci are considered, emphasizing the high efficiency of the Gm markers in such analyses.
对巴西贝伦市的515名居民和阿雷格里港的395名居民的免疫球蛋白重链同种异型（Gm）类型进行了研究，以试图定量估计种族亲本的贡献。贝伦市的人群可被描述为24%为黑人、22%为印第安人以及54%为高加索人。阿雷格里港的黑人似乎从高加索祖先那里继承了多达53%的基因，而生活在那里的白人则从非洲祖先那里继承了8%的基因。如果仅考虑Gm系统或同时考虑Gm系统加上其他七个基因座，那么为贝伦市获得的混合值非常相似，这强调了Gm标记在此类分析中的高效性。
