F1 hybrid is a term used in genetics and selective breeding. F1 stands for Filial 1, the first filial generation seeds/plants or animal offspring resulting from a cross mating of distinctly different parental types.
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A few days ago, we stopped by Graber Supplies on Highway 41 in south central Pennsylvania. Inside we found Ira Wagler, a general manager at the building, listening to the Rush Limbaugh Show as he worked. Wagler is a huge fan of conservative talk radio. Five days a week he heads to work in his blue truck with the dial set to WHP 580 in Harrisburg.