Developmental Mechanisms Problem Set

Problem 6: Spemann and Mangold's embryonic induction experiment

What amphibian embryonic tissue was shown by Spemann and Mangold to induce the formation of the neural plate, and in some cases, to induce a complete second embryo.

A. equatorial mesoderm

B. dorsal lip of the blastopore

C. yellow crescent

D. optic cup

E. zone of polarizing activity

The Biology Project Department of Biochemistry and Molecular Biophysics The University of Arizona Thursday, October 30, 1997
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