Antibiotic resistance Thesis

Step 1: In a one to two-page paper, give an overview of the embryonic stage of development.

• Describe the ectoderm, mesoderm, and endoderm and their associated structures.
• Discuss the structure and function of the embryonic disk.
• Describe embryo development and the role of chorionic villi.
• Include any environmental factors that may cause malformations in the developing embryo.