#Question id: 7102
#Unit 5. Developmental Biology
How is the Spemann organizer distinguished from the other mesodermal cells during induction by the cells of the vegetal region?
#Question id: 7103
#Unit 5. Developmental Biology
Patterning of the Xenopus mesoderm along the dorso-ventral axis involves an antagonistic relationship between chordin and BMP-4. Is there an analogy here to dorso-ventral patterning in the Drosophila embryo?
#Question id: 7104
#Unit 5. Developmental Biology
The grafting of the dorsal lip of the blastopore from an early Xenopus gastrula onto the ventral side of an early embryo will result in
#Question id: 7105
#Unit 5. Developmental Biology
The "default model" for neural tissue formation states that
#Question id: 7106
#Unit 5. Developmental Biology
In what genetic background could beta-catenin turn on target gene expression without Wnt protein?
#Question id: 7107
#Unit 5. Developmental Biology
What would be the effect on the timing of somite formation, if a piece of the pre-somitic mesoderm of a chick embryo is rotated by 180° and reinserted in its original position?