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Q. How does the embryo turn from gastrula into neurula? How is the neural tube formed? What is the embryonic origin of the nervous system in vertebrates?
The neurula stage is characterized by the appearance of the neural tube along the dorsal region of the embryo and the growth of mesoderm in that region induces the differentiation of ectodermal cells just above and these cells then differentiate forming the neural tube so the origin of the nervous system is the ectoderm the same germ layer that gives birth to the skin.
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Non-recurrent Type As mentioned earlier it refers to embryo development in reduced embryo sacs. The mechanisms identified for such cases are: Reduced Pseudogamy : The
Feline calcivirus infection This disease is caused by a virus under the family Caliciviridae. Its symptoms include rhinitis, tracheitis and pneumonia. The animals are lethargi
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what is cation and anion? list of cation and anion and its biological function?
Explain Prosoma in details. First tagma of a cheliciform consisting of the first six segments of the body. Appendages on the prosoma are involved in locomotion and feeding. Pro
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