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No because your mother would have to give birth to herself.

HOWEVER, if a biological mother died, an older sister could legally become the adoptive mother to her younger sister.

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Wiki User

12y ago

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Well if ur dad made a girl and then ur dad made u with his daughter then also ur dad is ur grandpa and ur mother is also ur sister

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Jere Anttila

Lvl 2
3y ago
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Q: How can your mother also be your sister?
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