In fact, humans have considerably more olfactory receptor pseudogenes than chimpanzees do, indicating that we lost many of those functional genes after our split from the ape lineage.

• 事实上，人类嗅觉受体伪基因要比黑猩猩多出许多，显示我们在演化之路与猿类分道扬镳后，就失去了许多功能性嗅觉受体基因。