Book excerpt: Two Huron U. College English professors introduce 14 essays reading literary explorations of how the "hybridity" (per black- white Scottish writer Jackie Kay) of mixed race permutations subvert established racial categories and racist assumptions. Readings include: Nella Larsen's Passing, Amy Tan's The Joy Luck Club, Mourning Dove's Cogewea: The Half-Blood, Toni Morrison's Paradise, and Adib Kalim's Seasonal Adjustments. Lacks an index. Annotation copyrighted by Book News, Inc., Portland, OR