Developmental capacitance, genetic accommodation, and adaptive evolution
Developmental capacitance, genetic accommodation, and adaptive evolution
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DOI：
10.1111/j.1525-142x.2007.00162.x
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发表时间：
2007-05-01
影响因子：
2.9
通讯作者：
Moczek, Armin P.
中科院分区：
文献类型：
--
作者：
Moczek, Armin P.
遗传调节的概念仍然存在争议，部分原因是尚不清楚遗传调节的进化是否迫使我们理解进化如何产生适应性新特征的革命，或者仅仅是重点的转移。在这里，我概述了一个在很大程度上支持后一种观点的观点。我认为，遗传适应进化可以很容易地融入传统的进化概念。与此同时，遗传适应性进化带来了新的经验和理论方法，这可能使生物学家能够突破我们目前对进化过程的理解，并解决一些长期存在的争议。具体来说，我讨论的作用，发展机制的自然，可能无处不在，电容器的神秘的遗传变异，和环境扰动的作用，通过这种变化可以成为可见的选择在一个人的人口规模的机制。我认为，在组合，发展电容和大规模的环境扰动有可能促进快速进化，包括新的适应性功能的起源，同时规避，否则强大的遗传和种群生物学的适应性进化的限制。最后，我强调了未来的实证研究，探索遗传适应进化的机制和意义的几个有前途的途径。
The concept of genetic accommodation remains controversial, in part because it remains unclear whether evolution by genetic accommodation forces a revolution, or merely a shift in emphasis, in our understanding of how evolution produces adaptive new traits. Here I outline a perspective that largely favors the latter view. I argue that evolution by genetic accommodation can easily be integrated into traditional evolutionary concepts. At the same time, evolution by genetic accommodation invites novel empirical and theoretical approaches that may allow biologists to push the boundaries of our current understanding of the process of evolution and to solve some long-standing controversies. Specifically, I discuss the role of developmental mechanisms as natural, and likely ubiquitous, capacitors of cryptic genetic variation, and the role of environmental perturbations as mechanisms by which such variation can become visible to selection on an individual to population-wide scale. I argue that in combination, developmental capacitance and large-scale environmental perturbations have the potential to facilitate rapid evolution including the origin of novel adaptive features while circumventing otherwise powerful genetic and population-biological constraints on adaptive evolution. I end by highlighting several promising avenues for future empirical research to explore the mechanisms and significance of evolution by genetic accommodation.