人类的自然选择和语言基因
Rob DeSalle1, Guilherme Lepski2,3, Analia Arévalo3
1Institute for Comparative Genomics, American Museum of Natural History, 79th at Central Park West, New York, NY, 10024, USA. desalle@amnh.org.
Scientific reports
|February 17, 2026
概括
自然选择影响了人类祖先与语言相关的神经基因. 尼安德特人和丹尼索瓦人表现出对语言基因的选择突发,与现代人类不同.
科学领域:
- 进化生物学是进化的生物学.
- 遗传学 是一个遗传学.
- 神经科学是一个神经科学.
- 灵长类动物的进化
背景情况:
- 明确表达的语言是人类的一个决定性特征.
- 了解语言演变的遗传基础至关重要.
- 跨灵长类血统的比较基因组学可以揭示进化压力.
研究的目的:
- 识别与表达语言相关的候选基因.
- 分析自然选择对这些基因在灵长类的基因谱系的影响.
- 研究与语言有关的神经基因选择在人类智人,尼安德特人和丹尼索瓦人之间的进化差异.
主要方法:
- 建立了100多个候选基因的列表,用于表达语言.
- 分析了自然选择效应的编码区域 (定向插曲性,放松/强化选择).
- 通过比较34种非人类灵长类动物物种的选择模式,Homo sapiens,尼安德特人和丹尼索瓦人.
主要成果:
- 在导致Homo sapiens-Neanderthal-Denisova三位一体的节点上发生了神经基因受改变选择效应的显著爆发.
- 随后在丹尼索瓦人和尼安德特人血统中观察到与语言相关的神经基因的选择爆发.
- 这些尼安德特人和丹尼索瓦人的增加与Homo sapiens血统中相同基因的最小选择形成鲜明对比.
- 涉及的基因主要与突触结构和维护有关.
结论:
- 与语言相关的神经基因在最近的人类血统中经历了明显的进化选择压力.
- 尼安德特人和丹尼索瓦人对参与突触功能的基因进行了显著的选择,这可能会影响语言能力.
- 提出了一个假设,将突触效率与这些人类群体的语言获取差异联系起来.
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