And in places like India and China, where the fossil record is scanty, the genetic history will be the only history. 像印度和中国这些地方，就缺少化石证据，遗传史将是惟一的历史。
The basic beginnings of genetic history lay in the ancient techniques of selective breeding to yield special characteristics in later generations. 遗传史发端于古老的选择性繁殖技术，这种技术能在后代当中产生独特的特征。
