symplesiomorphy

例句：

1. 1.The study of symplesiomorphy is crucial for understanding the evolutionary history of life on Earth.
   研究同源演化对于理解地球上生命进化的历史至关重要。
2. 2.In the field of paleontology, symplesiomorphy plays a key role in reconstructing the phylogeny of extinct species.
   在古生物学领域，同源演化在重建已灭绝物种的系统发育中起着关键作用。
3. 3. The discovery of shared molecular features among different species has led to the identification of symplesiomorphy, which helps scientists better understand the relationships between organisms.
   不同物种间共享的分子特征的发现导致了同源演化的识别，这有助于科学家更好地理解生物之间的关系。