Mascie-Taylor C G, Lasker G W
Department of Biological Anthropology, University of Cambridge, England.
Hum Biol. 1996 Jun;68(3):473-8.
We previously reported the tendency for the clines of blood group distributions in England, Scotland, and Wales to become flatter as the result of internal migration. The data came from a one-week birth cohort followed for 16 years. A further seven years and a finer geographic analysis yield mixed results. The Rh- clines did become flatter, but the clines for ABO blood groups A and O showed the opposite tendency during the additional years.
我们之前报道过，由于国内人口迁移，英格兰、苏格兰和威尔士的血型分布梯度呈现出变平缓的趋势。数据来自一个为期一周的出生队列，随访了16年。再过7年并进行更精细的地理分析后，结果喜忧参半。Rh阴性血型的梯度确实变得更平缓了，但在随后几年里，ABO血型中A和O型的梯度却呈现出相反的趋势。
