inviable

1.an inviable newborn calf.

未能存活的新生牛犊

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，匹配进行，但或产生杂或杂育。

3.Individuals crossing exclusively within the same population produce more progeny than those crossing in both directions and thereby use up some of their gametes for the production of inviable hybrids.

完全在同一群内进行杂交的个体比两个方向进行杂交的个体繁殖后代要多，因此为了产生无生机的杂，就要消耗掉一些配子。