From Wikipedia, the free encyclopedia. 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.
Dr. Dominic Dematteo is a Family Practice Specialist in Bensalem, Pennsylvania. He graduated with honors from Philadelphia College Of Osteopathic Medicine in 1990.
Dr. Mark DiStefano. Mark DiStefano, MD is the founder of DiStefano Hair Loss Restoration Centers. He is a member of the American Board of Hair Restoration Surgery as well as the International Board of Hair Restoration surgery.