Answer:
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The full-lineage of late entertainer, Dorothy Dandridge, was that
of being Mixed-Race via the fact that she was from a family that
had been of a continually Multi-Generational Multiracially-Mixed
(MGM-Mixed) ancestry throughout it's multiple geneations.
Also, both of her parents were members of the largely
Multiracial Ethnic group that is currently referred
to by the term of African-American (AA).
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