Final answer:
The difference in mate preferences among female ducks for different colored males can be explained by sexual selection. This preference can lead to sexual dimorphism, where males evolve different color patterns or plumage to attract their preferred mates.
Step-by-step explanation:
The difference in mate preferences among female ducks for different colored males can be explained by sexual selection. Sexual selection is a type of natural selection that occurs when one sex has more reproductive success than the other. In this case, the female ducks are choosing mates based on their coloration. Some female ducks prefer green males, while others prefer red males.
This preference for different colored males can lead to sexual dimorphism, which is the observable differences between males and females of a species. In this case, the male ducks may evolve different color patterns or plumage to attract their preferred mates. This is a common phenomenon in many species, where males exhibit more elaborate and colorful traits to attract females.
Overall, the difference in mate preferences among female ducks can lead to the evolution of different traits in male ducks as they compete for mates and try to attract the females they prefer.