发育生物学试题（Developmental biology test）.doc

发育生物学试题（Developmental biology test） 1. Fill in the blanks (40, 0.5 / a) 1. the developmental fate of each mesodermal Division: 1. The dorsal central mesoderm. Formation ---; Two dorsal mesoderm. Form mesoderm cells on both sides of the nerve tube and produce the dorsal - tissue; Three, the intermediary mesoderm forms --- the system and the ducts; Four. Lateral mesoderm extending farther from the notochord, forming the systemic, coelomic lining, all the mesoderm components, and the outer membranes and the head mesenchyme of the muscle except the muscle. 2. the notochord function. It is a lifelong low organ any animal, in higher mammals the notochord is a temporary structure can induce ridge formation and early embryo with complete function; development of the notochord fate: after the formation of the sclerotome, large number of notochord cells degenerate, death, and in the spinal cord tissue formation the cells between the vertebrae. Three stage 3. primary embryonic induction respectively: the first stage occurred in the cleavage stage, forming and partition layers; the second stage is the ectoderm mesoderm inducing back transformation induced by nerve system nerve; the third stage is the area of the central nervous system. 4. embryonic induction is characteristic of specificity, specificity, specificity, and genetic control. 5. primary sex determination refers to the development of undifferentiated gonads, or genes associated with the short arm of the Y chromosome and genes that may be associated with the autosomal or X chromosome. 6. stem cells, and found that cultured ES cells induced by ES cells under the same conditions, the differentiation direction of each are not identical, confirmed during embryonic development, the interaction between different areas or embryonic organization is the key factors in the new type of organization form. 7. of the two processes of angiogenesis, including the formation of blood vessels; the growth of blood vessels. 8. embryonic e