Given are certain facts which define ‘specification’ of a developing embryo.

 A. At the specification stage, commitment to cell identity is labile.

 B. At the specification stage, cell is capable of differentiating autonomously.

 C. The cell “knows” very early what it is to become without interacting with other cells.

 D. A phase where inductive signals trigger cell to determines their fate.

 Which of the above statements best define specification?

#Question id: 7010

#Unit 5. Developmental Biology

After anchor cell formation, When LIN-12 is used again during vulva formation, it is activated by the primary vulval lineage to

#Question id: 7225

#Unit 5. Developmental Biology

The processes by which the three ectodermal regions are made physically and functionally distinct from one another is called neurulation. Following statements are regarding to the mechanism of neurulation.

A. The specification of the ectoderm is accomplished during gastrulation, primarily by regulating the levels of BMP experienced by the ectodermal cells.

B. High levels of BMP specify the cells to become neural plate.

C. Very low levels specify the cells to become epidermis.

D. Intermediate levels effect the formation of the neural crest cells.

Which of the following combination is correct?

#Question id: 13145

#Unit 8. Inheritance Biology

#Question id: 1314

#Unit 4. Cell Communication and Cell Signaling

In desmosomes, cadherins link to an adjacent cell via:

#Question id: 2356

#Unit 2. Cellular Organization

A protein carrier and the use of cellular energy are required in ____