Hans spemann and colleagues developed the concept of the organizer in amphibian embryos while studying the

Dorsal lip of the blastopore

Explanation:

Correct word for the given statement is Dorsal lip of the blastopore

Dorsal lip of the blastopore :

The dorsal peripheral area of the blastopore, which goes about as a focal point of separation: as cells travel through this district to the inside of the fetus during gastrulation,

They gain the capacity to incite the overlying ectoderm to form into an assortment of tissues.

answer; (c) a law code that provides believers with a set of pratical laws to regulate their daily lives

answer; /// i believe that the correct answer is(cognitive revolution);