A AP Anterior endomesoderm A. (3 points) B. (3 points) Ectoderm B Dorsal mesoderm Dorsal lip of blastopore Endoderm Show

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A Ap Anterior Endomesoderm A 3 Points B 3 Points Ectoderm B Dorsal Mesoderm Dorsal Lip Of Blastopore Endoderm Show 1 (44.01 KiB) Viewed 20 times

A AP Anterior endomesoderm A. (3 points) B. (3 points) Ectoderm B Dorsal mesoderm Dorsal lip of blastopore Endoderm Shown at left is the diagram of a late-stage gastrula. The mesoderm is shown in the red color. The mesoderm has the ability to change the fate of the overlying ectoderm. Describe the molecules expressed in the mesoderm at points A and B. What is the function of those molecules, and what is their effect on the overlying ectoderm, in terms of eventual adult fate? C. (3 points)Where did those mesoderm cells originally reside at the late blastula stage, and how did they get to the points labeled A and B? How is the timing of their movement related to the expression of the above-mentioned molecules?