Speciation as a stage in evolutionary divergence
Speciation as a stage in evolutionary divergence
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DOI：
10.1086/280899
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发表时间：
1940-01-01
影响因子：
2.9
通讯作者：
Dobzhansky, T
中科院分区：
文献类型：
--
作者：
Dobzhansky, T
进化涉及生物多样性的增加，以及将生物细分为不连续的群体（种族、物种、属等），通过隔离机制防止这些群体杂交。将术语“物种形成”限制为隔离机制的发展过程似乎是合理的。隔离机制的起源通常被认为是遗传差异总体积累的副产品。这个理论可能不正确；隔离机制的开发可能是一个单独的过程。如果每个初期物种都代表遗传元素的适应性复合体，那么自然选择将有利于遗传变化的积累，从而阻碍或阻止此类物种的杂交。逐渐成为生理学家。将建立隔离屏障。隔离的发展可能在早期物种分布区域的边界处进行得最好。接触或重叠。
Evolution involves increase of the diversity of the organisms, as well as subdivision of the living beings into discontinuous groups (races; spp., genera, etc.) that are prevented from interbreeding by isolating mechanisms. It seems reasonable to restrict the term "speciation" to the processes of the development of isolating mechanisms. The origin of isolating mechanisms is customarily regarded as a by-product of the accumulation of genetic differences at large. This theory may not be correct; the development of isolating mechanisms may be a separate process. If each incipient species represents an adaptive complex of genetic elements, then natural selection will favor an accumulation of genetic changes that hinder or prevent the interbreeding of such spp. Gradually a physiol. isolating barrier will be built up. The development of isolation may proceed best at the boundaries where the distribution regions of the incipient spp. come into contact or overlap.