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Your definition of family has become so vague as to be meaningless. In genetics, adoptive parents are not considered family. I recommend you look into the evolu

• vacri 13y ago
  When did we specify we were solely talking about genetics? Do you really declare that the stepfamily down the road isn't actually a family? That's just nonsense from a political, social, or philosophical standpoint, and doubly so when you consider that the term we're using - nuclear family - is most often used in these contexts. I'm a biologist by training (though not a geneticist) and I've never seen the term 'nuclear family' used when talking genetics, but I've seen it a great many times in political and social commentary. In any case, what society considers a family has more impact on how humans treat each other than what genetics considers a family, so I don't see how you can so casually discard non-genetic definitions. If you go to a court that deals in family law, they certainly don't limit their definition of family to pure genetic strains. evolutionary foundations of human mating systems What exactly are you referring to here?