Antagonistic pleiotropy hypothesis

The antagonistic pleiotropy hypothesis is an idea that explains why some traits may be passed down through generations even though those traits might be bad for the organism. It means that traits can be both good for something and bad for it at the same time. An example of this would be a trait that gives you a strong heart but also makes you more likely to get wrinkles. Even though getting wrinkles might not be good for you, the strong heart can still be useful and that trait can be passed down.