That's a natrual assumption traci. However, genetics are much more complicated than that. Because not every trait is passed down and because somethings are recessive and other traits are dominant. Not to mention that many depressed people do have children. They might be less likely but depressed people usually have some periods of time in their life when there not depressed and when they do normal everyday things. Like having offspring.

But we will probably never know for sure how much is genetic and how much is enviromental. Like is a daughter depressed because she lived in a home with depressed people or was she born with that trait?