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Grandparents, individually known as grandmother and grandfather, or Grandma and Grandpa, are the parents of a person's father or mother - paternal or maternal. Every sexually reproducing living organism who is not a genetic chimera has a maximum of 4 genetic grandparents, 8 genetic great-grandparents, 16 genetic great-great-grandparents, 32 genetic great-great-great-grandparents,

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