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TLS Online TPP Program
#Question id: 15290
#Unit 5. Developmental Biology
Lens formation requires sequential events whereby the anterior neural plate signals the anterior ectoderm to promote secretion of Pax 6, which renders the anterior ectoderm more receptive to secretions from the optic vesicle. The above can be best explained by which of the following phenomenon?
TLS Online TPP Program
#Question id: 15291
#Unit 5. Developmental Biology
Cell to cell communication is important in development of an organism. The ability of cells to respond to a specific inductive signal is called
TLS Online TPP Program
#Question id: 15296
#Unit 5. Developmental Biology
Match the following
| Column I | Column II | Column III |
| A. Cytochalasin D | i. A sponge toxin | a. Enhances nucleation by binding and stabilizing actin dimers and thereby lowering the critical concentration. |
| B. Latrunculin | ii. A fungal alkaloid | b. Binds and sequesters G-actin, inhibiting it from adding to a filament end. |
| C. Jasplakinolide | iii. The “angel of death” mushroom | c. Binds at the interface between subunits in F-actin, locking adjacent subunits together and preventing actin filaments from depolymerizing. |
| D. Phalloidin | d. Depolymerizes actin filaments by binding to the (+) end of F-actin, where it blocksfurther addition of subunits. |
Which one of the following is correct combination?
TLS Online TPP Program
#Question id: 15297
#Unit 5. Developmental Biology
Which
of the following statement is correct regarding mammalian cleavage?
TLS Online TPP Program
#Question id: 15298
#Unit 5. Developmental Biology
In mammalian development Prior to blastocyst formation, each embryonic blastomere expresses ________ transcription factors and appears to be capable of becoming either ICM or trophoblast.
TLS Online TPP Program
#Question id: 15299
#Unit 5. Developmental Biology
Name of transcription factor which are responsible for pluripotency of stem cells or stimulate the production of OCT4 and NANOG ;