可提供的遗传信息对于解释自然界中的变异性来说已经绰绰有余。

We can provide more than enough genetic information to account for the variability in nature.

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遗传变异性是遗传保护研究的主要内容，在小种群中，往往由于瓶颈效应、近亲繁殖、奠基者效应和遗传漂变等使得遗传变异性减少。

Genetic variation is major study content in conservation genetics. In small population, genetic variation loss because of bottleneck effect, inbreeding, founder effect, and genetic drift.

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遗传变异性是品种改良的基础。

The variety improvement is based on the exploitation of genetic variations.

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