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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1 Dr. Jonathan Hecht, MD is a board certified neurologist in Pleasant Hill, California. He is currently licensed to practice medicine in California, Virginia, and District of Columbia. He is affiliated with Children's National Medical Center and MedStar Washington Hospital Center.  UCSFFellowship.