When the Bicoid protein is expressed in Drosophila, divisions between cells in the embryo are not yet fully developed. This information helps to explain which observation by Nüsslein-Volhard and Wieschaus?
A) mRNA from the egg is translated into the Bicoid protein.
B) Bicoid protein diffuses throughout the embryo in a concentration gradient.
C) Bicoid protein serves as a transcription regulator.
D) Bicoid protein determines the dorso-ventral axis of the embryo.

Question

Quizplus · Accepted Answer

Nüsslein-Volhard and Wieschaus observed that the concentration gradient of the Bicoid protein, which diffuses from the anterior end of the embryo, determines the development of the anterior-posterior axis of the embryo. The fact that the cell divisions are not fully developed yet when Bicoid protein is expressed helps to explain how the protein can establish this gradient.

When the Bicoid Protein Is Expressed in Drosophila, Divisions Between