Gurdon Nuclear Transplantation Experiment
Eggs from a strain of frogs with two nucleoli per cell nucleus are irradiated to
kill the nucleus. A nucleus
from a blastula cell of a strain with a single nucleolus is extracted and injected into the egg. The injected nucleus supports normal development
of the embryo until the blastula stage. [Demonstration that the cells in
the partial blastula have only a single nucleolus proves that the nucleus actually came from
the donor frog, and didn't simply survive irradiation of the receipient egg.]
All text material © 2004 by Steven M. Carr