non-hereditary variability

例句：

1. 1. The study found thatthe non-hereditary variability inthe population was significant.
   研究发现，人群中的非遗传变异显著。
2. 2. The researcher discovered thatthe non-hereditary variabilityof the species could be a factor inits survival.
   研究者发现，物种的非遗传变异可能是其生存的一个因素。
3. 3. Thegeneticists were surprised to find that therewas such a high degree of non-hereditary variability in the genome.
   遗传学家们惊讶地发现，基因组中存在如此高的非遗传变异程度。