Which of the following was a conclusion from the experiments of Spemann and Mangold?
A) Cytoplasmic determinants of development are homogeneously distributed in the amphibian zygote.
B) In the late blastula, certain regions of cells are determined to form skin or nervous tissue.
C) The dorsal lip of the blastopore can be isolated and will form a complete embryo.
D) The dorsal lip of the blastopore can initiate gastrulation.
E) The dorsal lip of the blastopore gives rise to the neural tube.

Question

Quizplus · Accepted Answer

Spemann and Mangold's experiments showed that the dorsal lip of the blastopore had the ability to initiate gastrulation, suggesting that it contains organizer cells that can induce the formation of other embryonic tissues. This discovery laid the groundwork for the study of embryonic induction and the role of signaling molecules in development.

Which of the Following Was a Conclusion from the Experiments