| 单词 | geographical isolation |
| 释义 | geographical isolationgeographical isolationthe effective isolation of a GENE POOL by geographical barriers. For example, oceanic islands are isolated because of the difficulty of the sea-crossing for many organisms. The evolution of new species takes place through the prevention or limitation of GENE FLOW and various isolating mechanisms may play a part in this, one of the most important being geographical isolation. Compare ECOLOGICAL ISOLATION. see SPECIATION. |
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