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My older sister came back "close family-first cousin".

What does this mean?

Shared DNA 1961 cM across 74 segments

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DNAPainter says that 1961cM probably means one of the following:

  • Grandparent
  • Aunt or Uncle
  • Half Sibling
  • Niece or Nephew
  • Grandchild

I'm guessing that you can rule out grandparent and grandchild :-)

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From The Shared cM Project 3.0 tool v4 for 1,961 cM it would seem that you are more likely to be a half-sister or niece (your age difference may help distinguish which) than a full sibling.

Full sisters seems unlikely because at that page the expected range for full siblings is 2,209 - 3,304 with the mean at 2,629 cM.

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