A common mechanism drives the alignment between the micro‐ and macroevolution of primate molars

A common mechanism drives the alignment between the micro‐ and macroevolution of primate molars
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一个共同的机制驱动灵长类动物臼齿的微观进化和宏观进化之间的一致性

DOI:
10.1111/evo.14600
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发表时间:
2022
期刊:
影响因子:
3.3
通讯作者:
Uyeda, Josef C.
Uyeda, Josef C.
中科院分区:
环境科学与生态学2区
文献类型:
--
作者:
Mongle, Carrie S.;Nesbitt, Allison;Machado, Fabio A.;Smaers, Jeroen B.;Turner, Alan H.;Grine, Frederick E.;Uyeda, Josef C.

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生物学的一个核心挑战是揭示不同水平的生物变异如何相互作用并塑造多样性。然而,最近的实验研究表明,流行的进化模型不能很容易地解释微观和宏观进化之间的联系,在深时间尺度。在这里,我们认为这种悖论可能是一种共同机制驱动相关的进化模式的结果。我们研究的比例遗传变异和性状进化的模式在一个系统的发展过程是很好地理解,以深入了解这种对齐之间的形态分歧和遗传变异可能会保持在宏观进化的时间。灵长类磨牙提出了一个模型系统,通过它来连接发展过程的进化动力学,因为有偏见的模式的变化,结果从发展架构调节其形成。我们考虑这种偏见的变化是如何在种群水平上表达,以及它如何通过灵长类动物的进化表现出来。灵长类臼齿分化的宏观进化速率与它们的遗传变异之间有很强的对应关系。这表明了一种进化模型,其中选择与遗传变异、表型变异和解剖特征的潜在发育结构的方向密切相关。
A central challenge for biology is to reveal how different levels of biological variation interact and shape diversity. However, recent experimental studies have indicated that prevailing models of evolution cannot readily explain the link between micro- and macroevolution at deep timescales. Here, we suggest that this paradox could be the result of a common mechanism driving a correlated pattern of evolution. We examine the proportionality between genetic variance and patterns of trait evolution in a system whose developmental processes are well understood to gain insight into how such alignment between morphological divergence and genetic variation might be maintained over macroevolutionary time. Primate molars present a model system by which to link developmental processes to evolutionary dynamics because of the biased pattern of variation that results from the developmental architecture regulating their formation. We consider how this biased variation is expressed at the population level, and how it manifests through evolution across primates. There is a strong correspondence between the macroevolutionary rates of primate molar divergence and their genetic variation. This suggests a model of evolution in which selection is closely aligned with the direction of genetic variance, phenotypic variance, and the underlying developmental architecture of anatomical traits.
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