Which result did Hans Spemann get when he bisected a salamander zygote, isolating the gray crescent in one of the two resulting cells?
A) Both halves developed into complete embryos.
B) The half with the gray crescent developed into a belly piece, and the other half formed a complete embryo.
C) Neither half developed.
D) The half with the gray crescent developed into a complete embryo, and the other half formed a belly piece.
E) The half with the gray crescent developed into a complete embryo with a secondary embryo attached to its belly region.

Question

Quizplus · Accepted Answer

When Hans Spemann bisected a salamander zygote and isolated the gray crescent in one of the resulting cells, the half with the gray crescent developed into a complete embryo, while the other half formed a belly piece. This experiment demonstrated the concept of embryonic induction, where one group of cells can influence the development of neighboring cells to form different tissues and structures. Spemann's experiment was a crucial step in understanding the process of embryonic development, and he was awarded the Nobel Prize in Physiology or Medicine in 1935.

Which Result Did Hans Spemann Get When He Bisected a Salamander