Third, the mating preference must persist.

第三，交配偏好必须坚持。

Lastly, the mating preference has to have a repair mechanism.

最后，交配偏好必须有一个修复机制。

Researchers have also used 3D-printing to look at the mating preferences of the northern map turtle.

研究人员还使用 3D 打印来观察北方地图龟的交配偏好。

Researchers tried to find out if fruit flies might have their own cultural assets to pass down through the generations, by looking at mating preferences.

研究人员试图通过观察交配偏好来确定果蝇是否可能拥有自己的文化资产来代代相传。