Various types of σ factor in column I, that are involved in several other function given in column II

I	II
I) σ70	a) Induced by unfolded proteins in the cytoplasm contain chaperones activity which refold unfolded proteins
II) σs	b) Genes involved in flagellum assembly
III) σ32	c) Genes for nitrogen metabolism and other functions
IV) σE	d) Housekeeping genes, most genes in exponentially replicating cells
V) σF	e) Activated by unfolded proteins in the periplasmic space and cell membrane; genes encoding proteins that restore integrity to the cellular envelope
VI) σ54	f) Stationary-phase genes and general stress response

 Which of the following combination is correct?

#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?

#Question id: 5132

#Unit 5. Developmental Biology

Upon secretion of wnt, When Wnt attaches to the Frizzled receptor on a responding cell, the cell secretes Notum, a hydrolase that associates with glypican and then cleaves off Wnt’s attached lipids in a process of deacylation or delipidation. This process:

#Question id: 5133

#Unit 5. Developmental Biology

Identify the correct ligands in both receptor serine kinase pathway.

#Question id: 5134

#Unit 5. Developmental Biology

Match the following cleavage patterns with the species in which they occur.