Edouard Joseph Louis-Marie van Beneden

March 5th

  • He was a Belgian embryologist and cytologist best known for his discoveries concerning fertilization in sex cells and chromosome numbers in body cells.
  • From 1883, he experimented with the worm Ascaris megalocephala, an intestinal worm found in horses.
  •  His studies showed that sexual fertilization results from the union of two different cell half-nuclei.

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