老G 蜜蜂 蜂王 雄峰 工蜂互相搞破坏那篇阅读讲了个啥？

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原文中的 but a typical worker's fitness would be diminished if other workers‘ sons, who have less genetic material in common with the worker, supplanted the queen‘s sons (the worker‘s brothers). 与题目选项中的 an individual worker's fitness can be maintained without the individual herself reproducing. 好像对应着，但是自己感觉不能理解其中的逻辑关系，望高人翻译指点下！