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An F1 hybrid (or filial 1 hybrid) is the first filial generation of offspring of distinctly different parental types. F1 hybrids are used in genetics, and in selective breeding, where it may appear as F1 crossbreed. The term is sometimes written with a subscript, as F1 hybrid.
Formula One (also Formula 1 or F1) is the highest class of single-seat auto racing that is sanctioned by the Federation FÃ©dÃ©ration internationale de'L (AUTOMOBILE). fiahe  formula , designated in the name, refers to a set of rules, to which all participants' cars must conform. The F1 season consists of a series of races, known as Grands Prix (from French, originally meaning great prizes), held throughout the world on purpose-built F1 circuits and public roads.