Disease and evidence of disease can play a big role in mate selection – previously any cues to disease would be a big turn-off.

疾病和疾病的证据可以在择偶中发挥重要作用——以前任何疾病的线索都将是一个巨大的障碍。

First, the female fly must learn their mate selection preference from watching other female flies choose a mate.

首先，雌性果蝇必须通过观察其他雌性果蝇选择配偶来了解它们的择偶偏好。

If I told you there is a biological adaptation for talking, mate selection, childcare; maybe it's true, maybe it isn't, but it's not crazy.

如果我告诉你， 说话、择偶、照顾孩子都有生物适应；也许这是真的， 也许不是，但这并不疯狂。

For example, when an observer female watched a second female select a green male to copulate with, the observer females overwhelmingly chose a green male when faced with their own mate selection.

例如，当一只雌性观察者看到另一只雌性选择一只绿色雄性与之交配时，雌性观察者在面对自己的配偶选择时绝大多数选择了一只绿色雄性。