1 janv. 1891 - 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.
Description:
His research was carried on by Hans Spemann in Germany and Ross Harrison in the US.Ajouté au bande de temps:
Date:
1 janv. 1891
Maintenaint
~ Il y a 133 ans
