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  1. Oskar Hertwig, (born April 21, 1849, Friedberg, Hessen—died October 25, 1922, Berlin), German embryologist and cytologist who was the first to recognize that the fusion of the nuclei of the sperm and ovum was the essential event in fertilization.

  2. Apr 17, 2019 · Wilhelm August Oscar Hertwig (April 21, 1849 – October 25, 1922) made his great discovery right at the beginning of a long scientific career, which made him an eminent zoologist and scholar of the theory of evolution. In those early days, he formed half of a brilliant scientific duo with his brother Richard, born a year later.

  3. ONE of the founders of the science of heredity and one of Germany's most brilliant embryologists and comparative anatomists, Wilhelm August Oscar Hertwig was born a century ago, on April 21, 1849,...

  4. Oscar Hertwig (ôs´kär hĕrt´vĬkh), 1849–1922, German embryologist. He studied medicine with Haeckel and Gegenbaur. In 1875 he established the fact that fertilization consists of the union of the nuclei of a male and a female sex cell. He studied the germ-layer theory (introducing the term coelom) and malformations of vertebrate embryos.

  5. Nov 01, 2007 · Wilhelm August Oscar Hertwig contributed to embryology through his studies of cells in development and his discovery that only one spermatozoon is necessary to fertilize an egg. He was born 21 April 1849 to Elise Trapp and Carl Hertwig in Hessen, Germany.

  6. Oscar Hertwig (21 April 1849, in Friedberg – 25 October 1922, in Berlin) was a German zoologist and professor, who also wrote about the theory of evolution circa 1916, over 55 years after Charles Darwin 's book The Origin of Species.

  7. Jul 22, 2022 · Oscar Hertwig (1849-1922) was a German embryologist and anatomist who first identified in amphibia tooth development, and was subsequently named Hertwig's epithelial root sheath (HERS). In amphibia, this is a permanent structure. In mammals, this is a transient structure, assembled during early tooth root formation and elongation.

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