Our findings indicate that both opsin genes have been under purifying selection in the majority bats despite a long history of nocturnality.

但对恒频蝙蝠而言，视觉退化的根本原因在于它具有一种更发达的回声定位能力。

Our findings indicate that both opsin genes have been under purifying selection in the majority bats despite a long history of nocturnality.

但对恒频蝙蝠而言，视觉退化原因在于它具有一种更发达回声定位能力。

Our findings indicate that both opsin genes have been under purifying selection in the majority bats despite a long history of nocturnality.

但对恒频蝙蝠而言，觉退化的根本原因在于它具有一种更发达的位能力。

Our findings indicate that both opsin genes have been under purifying selection in the majority bats despite a long history of nocturnality.

但对恒频蝙蝠而言，视觉退化的根本原在于有一种更发达的回声定位能力。

Our findings indicate that both opsin genes have been under purifying selection in the majority bats despite a long history of nocturnality.

但对恒频言，视觉退化根本原因在于它具有一种更发达回声定位能力。

Our findings indicate that both opsin genes have been under purifying selection in the majority bats despite a long history of nocturnality.

但对恒频蝙蝠而言，视觉退化根本原因在于它具有一种更发声定位能力。

Our findings indicate that both opsin genes have been under purifying selection in the majority bats despite a long history of nocturnality.

但对恒频蝙蝠而言，视觉退化的根本原因在于它具有一种更发达的回声定位能力。

Our findings indicate that both opsin genes have been under purifying selection in the majority bats despite a long history of nocturnality.

但对恒频蝙蝠而言，视觉退化根本原因在于它具有一种更回声定位能力。

Our findings indicate that both opsin genes have been under purifying selection in the majority bats despite a long history of nocturnality.

但对恒频蝙蝠而言，视觉退本原因在于它具有一种更发达回声定位能力。