A free science library and personal learning tool that currently concentrates on genetics, the study of evolution, variation, and the rich complexity of living organisms.

Scitable—免费的自然科学图书馆和个人学习工具，目前专注于遗传学、进化论、变异学以及生物复杂性等领域。

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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.

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。

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It USES a biological point of view of genetics, with natural selection, genetic variation and other mechanisms to achieve the improvement of each individual adaptation.

它使用了生物遗传学的观点，拥有自然选择、遗传、变异等作用机制，实现各个个体的适应性的提高。

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What we were interested in doing back in those early days of human molecular genetics was just trying to find out some basic information about inherited variation in our DNA. And it was purely by accident in those studies that we generated, totally out of the blue, what proved to be the very first DNA fingerprint.

NPR: Pioneering DNA Forensics