Question

During embryonic development, the establishment of polarity along anterior/posterior/ventral medial/axis is called?

• A. Axis formation
• B. anamorphism
• C. `pattern formation
• D. organizer phenomenon

Answer 1

The correct option is D organizer phenomenon

The experiments of Spemann and Mangold showed that the dorsal lip of the blastopore, and the notochord that forms from it, constituted an “organizer” that could instruct the formation of new embryonic axes. Thus it was called as phenomenon of the organizer.

So, the correct answer should be option 'organizer phenomenon'