1 ene 1891 año - Hans Dreisch split a fertilized sea urchin egg which was at the two-cell division stage by hand. Each cell subsequently developed into two small but identical sea urchin larva.
Descripción:
His research was carried on by Hans Spemann in Germany and Ross Harrison in the US.Añadido al timeline:
fecha:
1 ene 1891 año
Ahora mismo
~ 134 years ago