1 jan 1891 ano - 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.
Descrição:
His research was carried on by Hans Spemann in Germany and Ross Harrison in the US.Adicionado na linha do tempo:
Data:
1 jan 1891 ano
Agora
~ 133 years ago
