| 单词 | 遗传变异 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔crossing over〕The exchange of genetic material between homologous chromosomes that occurs during meiosis and contributes to genetic variability.交换：一种发生在减数分裂期间的、有助于遗传变异的同源染色体之间的遗传物质的交换美国传统〔ice-minus〕Of or relating to a strain of genetically altered bacteria that are applied to crop plants to inhibit the formation of frost.抗冰菌的：用于谷类植物防止霜冻的遗传变异细菌的，与之有关的美国传统〔selectionist〕Of or relating to the view that evolution or genetic variation occurs chiefly as a result of natural selection.自然选择论的：认为进化和遗传变异的发生是自然选择的结果的观点的或与之相关的美国传统 |
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