The fewest signals of selection were seen among people who live in the humid tropics, the ecoregion where the ancestral human population evolved.
最少观察到遭到自然选择的是生活在潮湿热带气候地区的人们，这些地区是人类祖先的栖息地。
2
The result shows that there are five main ecoregion types in Lhasa area, namely valley agriculture zone, mountain steppe, alpine meadow, snow and ice and rock, and lake.
Located along Buffalo bayou in Houston, the Arboretum lies within the Gulf Coastal Plains ecoregion, supporting vast flat prairies that abut wooded ravines associated with bayous and depressions.