An organism, such as a strain of bacteria, that has lost the ability to synthesize certain substances required for its growth and metabolism as the result of mutational changes.
一种有机体，如细菌菌株，因某种突变的结果而失去合成某种生长及代谢所需物质的能力。
An organism, such as a strain of bacteria, that has lost the ability to synthesize certain substances required for its growth and metabolism as the result of mutational changes.
一种有机体，如细菌菌株，因某种突变的结果而失去合成某种生长及代谢所需物质的能力。
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