you miss your Dad
it means you will be like him one day
It means they're thinking about you and your child. Nothing more. It certainly doesn't mean that any of them will turn out to be right, though if they dream that he looks like a family member (a reasonable thing to dream), they may be fairly close, just because that's how genetics works.
its a coincidence
it means you've got very weird dreams
This dream reflects the dreamer's grief and regret that it was not possible to save the father's life.
The dream means very little as described. The images and persons seen in dreams are symbols that often represent generic types, much like avatars in video games. It is not unusual to feel as if someone looks and acts "exactly" like someone from a dream, when in reality, the dream had no resemblance to the actual person. The experience simply influenced the memory of the dream.
It means you are thinking about him
It most likely means you miss your father.
This dream appears to suggest that your late father had a negative influence on you. It could be that your mind is associating self-destructive behavior with your dead father so that you can leave such things in the past, like your father, and not allow them to continue to influence you as you move forward with your own life.
The dream suggests that the dreamer would like to do something together with the "father" in the dream. If the dreamer is a sexually active woman of childbearing age, a pregnancy test might be a good idea. Otherwise, the dream does not provide any information about anyone other than the dreamer.
it means that someone is veary jelous of your father and you need to save him
The dream suggests that the dreamer feels abandoned with someone else's problem.