#Question id: 5126
#Unit 5. Developmental Biology
Which one is correct according to adult stem cell lineage?
#Question id: 5127
#Unit 5. Developmental Biology
The following are certain statements regarding stem cells. Which one is correct?
#Question id: 5128
#Unit 5. Developmental Biology
During lens formation in the Xenopus, the following statements have been proposed. Which statement is incorrect?
#Question id: 5129
#Unit 5. Developmental Biology
once the lens has formed, it induces other tissues. One of these responding tissues is the optic vesicle itself; thus, the inducer becomes the induced. Under the influence of factors secreted by the lens, the optic vesicle becomes the optic cup, and the wall of the optic cup differentiates into two layers: the pigmented retina and the neural retina. such interactions are called as-
#Question id: 5130
#Unit 5. Developmental Biology
Regulation by gradients of paracrine factor concentration was elegantly demonstrated by the specification of different mesodermal cell types in the frog Xenopus laevis by activin, a paracrine factor of the TGF-beta family. Which of the following observations are correct from this graph?
#Question id: 5131
#Unit 5. Developmental Biology
Differentiated cells express the genes and proteins characteristic of their final identity in the adult, and that identity can be altered only under special circumstances. How does the concept of differentiation, as described here, differ from the concept of determination?