Biologists studying wild monkeys sometimes need the genetic materialDNA from a particular monkey to determine the animal's parentage.
生物学家研究野生猴子时，有时需要某只猴子的遗传物质 DNA 来确定其亲子关系。
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By analyzing the DNA, the genetic material of the proteins, the researchers could focus on the toxic genes and use them to trace the evolution of snake venom, and from this, the evolution of snakes.
通过对 DNA 及蛋白质中的基因物质进行分析，研究人员可以专注于有毒基因，并利用它们得到蛇毒的进化轨迹，这样也就知道了蛇的进化源。
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In 1952, the "Waring blender experiments" of Alfred Hershey and Martha Chase confirmed DNA as the genetic material.