约瑟夫看到一群可疑的人在密西西比河的一艘轮船上打牌。Joseph watched a shady-looking bunch playing cards aboard a Mississippi steamer.铁轨跨过这条河直达矿井口。Across the river the railway track ran up to the pithead.将近100万人渡过这条河进入摩尔达维亚。Nearly one million peopl...
The average heterozygosity of offspring and polymorphic information content ( PIC ) etc were lower than those of their parents.子代的平均期望杂合度(He) 、平均观测杂合度 ( Ho)和平均多态性信息含量(PIC ) 等指标均低于亲代.Altogether, half the offspring will be...