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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Dr. Herren's Background. David J. Herren, MD is a practicing Ophthalmologist (Eye Specialist) in Rome, GA. Dr. Herren graduated from Medical College of Georgia School of Medicine in 2012 and has been in practice for 5 years. He completed a residency at University of Tennessee Health Science Center.