A researcher performed an experiment during vulva formation in C.elegans;

I- In first experiment destroyed anchor cell 

II- In second experiment destroyed three central VPCs 

What kind of conclusion has been drawn by these experiments?

a) I-Three cells out of six of the equivalence group divide once and contribute to the vulva formation

b) I-all six cells of the equivalence group divide once and contribute to the hypodermal tissue

c) II-three outer cells, which normally form hypodermis, generate vulval cells instead

d) II-three remaining cells normally formed hypodermis as usually

TLS Online TPP Program

#Question id: 28322

#Unit 5. Developmental Biology

In mammalian cell, second slow block to polyspermy comes from___

TLS Online TPP Program

#Question id: 28323

#Unit 5. Developmental Biology

 A cleavage furrow cleaved only a portion of the cytoplasm and does not penetrate the yolky portion, this type of cleavage is referred to as___ 

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#Question id: 28324

#Unit 5. Developmental Biology

Echinoderms exhibit which type of cleavage?

TLS Online TPP Program

#Question id: 28325

#Unit 5. Developmental Biology

The pattern of embryonic cleavage peculiar to a species is determined by two major parameters: 

(1) the amount and distribution of yolk protein within the cytoplasm, which determine where cleavage can occur and the relative sizes of the blastomeres

(2) factors in the egg cytoplasm that influence the angle of the mitotic spindle and the timing of its formation

Which of the following statements is incorrect about patterning of embryonic cleavage?

TLS Online TPP Program

#Question id: 28326

#Unit 5. Developmental Biology

Infolding of a sheet of epithelium cells which are mainly seen in the sea urchin endoderm ?

TLS Online TPP Program

#Question id: 28327

#Unit 5. Developmental Biology

During the formation of Amphibian mesoderm, Inward movement of an expanding outer layer so that it spreads over the internal surface of the remaining external cells, this process of movement of outer layer is called as____