Question

I would appreciate any help with questions 1-5. Thanks!

Module 5 problem: Developmental biologists did the following experiments to discover the role of endoderm in the specification of cardiogenic mesoderm. Using early mouse embryos: Experiment 1 Removed the anterior endoderm and cultured the embryo - no cardiogenic mesoderm and no heart muscle cells developed. Experiment 2: Removed anterior endoderm and replaced it posterior endoderm from another embryo and cultured the embryo - no cardiogenic mesoderm and noheart muscle cells formed. Experiment 3 Removed anterior endoderm and replaced it anterior endoderm from another embryo and cultured the embryo - cardiogenic mesoderm and heart muscle cells developed. 1. What are the signals that come from the anterior endoderm? 2. What is their role in specification of the cardiogenic mesoderm? 3. What signals come from the posterior endoderm? 4. What signals come from the neural tube/notochord? 5. What does the data mean?

Answer 1

Answers: Page 1 * As per the given data - 1. And.). The signals for the synthesis of the Cardiogenic me sod com emerge from the endoderm. 2. Anus) They synthesize the Cardiogenic heart muscle cells. mesoderm and the 3. Ano.) It send signals for receptors for the pain and other stimulus, 4. Auf) The neusal tube or notochood send signals for the functioning of all the three cardiogenic layers and their synthesis. 5. Ay.) This data means that the endoderm Plays a role in synthesis mesoderm and heart muscle cells. of cardiogenic Х