The similarity, heredity distances and the branches length of each lineage showed that GTH ⅰ-β subunit had faster evolution rate in teleostei while LH β was in the same as in Amniota. 成熟肽相似性、遗传距离和系统树分支长度显示GTHⅠ-β亚基在真骨鱼类进化速率显著快于其他脊椎动物,而LH-β亚基在羊膜动物中进化比其他脊椎动物快。