| 词汇 | symplesiomorphy |
| 释义 | BETA Examples of symplesiomorphysymplesiomorphy isn’t in the Cambridge Dictionary yet. You can help! Their similarity to other ground-dwelling birds such as partridges and megapodes is a result of convergence and symplesiomorphy rather than shared evolutionary innovations. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. When two or more taxa that are not nested within each other share a plesiomorphy, it is a symplesiomorphy (from "syn-", together). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Later it was realized that the common ancestors of all spiders had these features (a state known as symplesiomorphy). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. For example, the prominent discipline of cladistics uses terms such as symplesiomorphy and synapomorphy for particular aspects of basal and derived attributes. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. However, unlike shared innovations (or "synapomorphies"), the common retention of archaisms (or "symplesiomorphy") is not necessarily considered evidence of a period of common isolated development. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The concept of the symplesiomorphy shows the danger of grouping species together purely on the basis of morphologic or genetic similarity without distinguishing primitive from derived traits. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A commonly cited reason is that distances are inherently phenetic rather than phylogenetic, in that they do not distinguish between ancestral similarity (symplesiomorphy) and derived similarity (synapomorphy). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. |
反思网英语在线翻译词典收录了377474条英语词汇在线翻译词条，基本涵盖了全部常用英语词汇的中英文双语翻译及用法，是英语学习的有利工具。