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Transforming the neural plate into a neural tube is an important event towards the formation of central nervous system, in which the following sub-events might take place: A. In primary […]

Given below are some of the statements in connection with neural tube formation in vertebrates: A. In primary neurulation the cells surrounding the neural plate direct the neural plate cells […]

In two major ways the neural plate is converted into a neural tube, primary neurulation and secondary neurulation. A. In primary neurulation, a hollow neural tube is formed. B. In […]

A type of regeneration in which the differentiated cells divide, maintaining their differentiated function without dedifferentiation and production of undifferentiated mass, is known as (1) Epimorphosis (2) Morphallaxis (3) Compensatory […]

Given below are some of the statements regarding regeneration: A. The type of regeneration characteristic of mammalian liver is considered as compensatory regeneration. B. Regrowth of hair shaft from follicular […]

Following statements were made regarding regeneration in different organisms: A. The regenerating blastema cells in amphibians retain their specification even when they dedifferentiate. B. A transgenic Hydra when made to […]

Clonogenic neoblasts are involved in planarian (flatworm) regeneration. This is an example of: (1) epimorphosis (2) morphallaxis (3) stem cell-mediated regeneration (4) compensatory regeneration  Planarians, a group of flatworms, exhibit […]

In case of Hydra, the major head inducer of the hypostome organizer is a set of Wnt proteins acting through the canonical β- catenin pathway. What would be the result, […]

Hydra shows morphallactic regeneration and involves which one of the following signal transduction pathway in its axis formation? (1) Wnt/β-catenin pathway (2) Retinoic acid pathway (3) FGF pathway (4) Delta-Notch […]