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Based on the U-series dating of intercalated speleothem formations, the chronology of several hominid sites in southern China has been studied.

本文采自云南呈贡龙潭山1号洞和广西土博咁前洞晚期智人遗址的动物化石和洞穴次生碳酸岩样品进行了铀系年。

The possible effect of chromosome 9 inversion on meiotic chromosome segregation was investigated by FISH, which showed an increased incidence of diploidy.

应用原杂交技研究了9号染色体减数分裂时的染色体分离可能造成的影响，结果显示二倍体发病率增加了。