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TLS Online TPP Program

#Question id: 26938

Which of the following statements is the most appropriate to define character displacement?

#Unit 10. Ecological Principles
  1. Two related species depending on the same prey species avoid competition by feeding at different times of the day.
  2. The body sizes of two related species are very similar when they are allopatric but in geographical areas of sympatric, one species is significantly smaller than the other
  3. The food niche of a species is generally wider in the absence of competing species than in their presence.
  4.  Closely related species can coexist if their densities are regulated by a predator
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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 IColumn IIColumn III
A. Cytochalasin Di. A sponge toxin

a. Enhances nucleation by binding and stabilizing actin dimers and

thereby lowering the critical concentration.

B. Latrunculinii. A fungal alkaloidb. Binds and sequesters G-actin, inhibiting it from adding to a filament end.
C. Jasplakinolideiii. 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 ;
TLS Online TPP Program

#Question id: 15300

#Unit 5. Developmental Biology

In hippo signaling pathway, the activation of the Cdx2 gene in the trophoblast cells appears to be regulated by the Yap protein, which in turn is a cofactor for the transcription factor Tead4. Tead4 is found in the ________blastocyst