THE GEOMETRY OF EVOLUTION
THE GEOMETRY OF EVOLUTION
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DOI：
10.1016/0303-2647(90)90030-5
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发表时间：
1990-01-01
期刊：
影响因子：
1.6
通讯作者：
CONRAD, M
中科院分区：
文献类型：
--
作者：
CONRAD, M
有些结构比其他结构更适合通过达尔文-华莱士变异和选择机制进行自组织。这种进化适应性（或进化性）本身可以通过变异和选择而进化，或者凭借与可靠性和稳定性的联系，或者通过与有利性状一起沿着，使其得以出现。为了使一个结构进化，必须有一个合理的概率，即遗传变异将它从一个适应性高峰带到另一个适应性高峰;同时，结构不应该对表型扰动过于不稳定，因为这与占据一个高峰是不相容的。在组件和交互数量方面复杂的组织更有可能满足攀峰条件，但不太可能满足稳定性条件。生物结构的特点是高度的组件冗余和多个弱相互作用满足这些冲突的压力。
Some structures are more suitable for self-organization through the Darwin-Wallace mechanism of variation and selection than others. Such evolutionary adaptability (or evolvability) can itself evolve through variation and selection, either by virtue of being associated with reliability and stability or by hitchhiking along with the advantageous traits whose appearance it facilitates. In order for a structure to evolve there must be a reasonable probability tht genetic variation carries it from one adaptive peak to another; at the same time the structure should not be overly unstable to phenotypic perturbations, as this is incompatible with occupying a peak. Organizations that are complex in terms of numbers of components and interactions are more likely to meet the peak-climbing condition; but less likely to meet the stability conditions. Biological structures that are characterized by a high degree of component redundancy and multiple weak interactions satisfy these conflicting pressures.