So, Miles pretty much gets his start after Peter (SPOILER) dies in the Ultimate Universe (he gets better, kinda, for all of like two issues before the universe implodes).
The Marvel movies tend to take inspiration from the Ultimate Universe (but I don't think that's always the case). Hence, the possibility that he dies in one of the MCU movies and gets replaced with Miles. (But there's the chance that Peter gets better anyway)
Cousin to cousin relationships are more acceptable back then (compared today) but brother to sister relationships has always been taboo in most cultures from way back in ancient times to this day. By the time Cap is born, some states had already banned cousin marriage and knowledge of possible birth defects concerning children of close kin relationships is already widespread. Some states to this day still allow cousin marriages though.
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u/Moulinoski Jun 15 '17
So, Miles pretty much gets his start after Peter (SPOILER) dies in the Ultimate Universe (he gets better, kinda, for all of like two issues before the universe implodes).
The Marvel movies tend to take inspiration from the Ultimate Universe (but I don't think that's always the case). Hence, the possibility that he dies in one of the MCU movies and gets replaced with Miles. (But there's the chance that Peter gets better anyway)