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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.
ALSO SEE: 2013 Ford Fusion Hybrid: Quick Winter Gas Mileage Test. Changes to the 2016 Fusion hybrid and plug-in hybrid models are minimal. The most notable is the addition of a new EcoSelect driving mode--with more gradual acceleration and less power devoted to heating and ventilating.