ISOabbr.国际标准化组织(=International Standards Organization)isoglossn.[语]同言线(语言地图上标示不同语言特点的区域线)

1. The first general type is made up of prezygotic isolating mechanisms that prevent the formation of zygotes.
   第一种基因型由前合子机械隔离机制阻止合子的生成。
2. In postzygotic isolating mechanisms mating occur, but the resulting hybrid organism is inviable or sterile.
   在合子后隔离机制中，匹配可以进行，但或不产生杂种或杂种不育。