One of Hans Spemann's important experiments involved
A) dividing human embryos into equal halves.
B) killing a single cell in a sea urchin embryo to study the effects.
C) dividing a frog embryo in two using a strand of his baby daughter's hair.
D) removing cytoplasm from muscle cells and transplanting it into a fertilized egg.
E) separating the cells of a sea urchin embryo to study their development.

Question

Quizplus · Accepted Answer

Hans Spemann's important experiment involved dividing the frog embryo in two using a strand of his baby daughter's hair. This was the experiment that led to the discovery of the organizer, a group of cells that directs the development of the embryo. Spemann found that the cells of the embryo could be directed to form a new embryo if they were transplanted to a particular location, which he identified as the organizer region. This experiment laid the foundation for the study of embryonic development and the understanding of the role of cell signaling in directing the development of tissues and organs.

One of Hans Spemann's Important Experiments Involved