Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 13053
TLS Online TPP Program

#Question id: 14838

Sequence of amphibian lens induction postulated by experiments on embryos of the frog Xenopus laevis ; EXCEPT

#Unit 5. Developmental Biology
  1. Unidentified inducers (possibly from the foregut endoderm and cardiac mesoderm) cause the synthesis of the Otx2 transcription factor in the head ectoderm during the late neurula stage.
  2. As the neural folds rise, inducers from the anterior neural plate (including the region that will form the retina) induce Pax6 expression in the anterior ectoderm that can form lens tissue.
  3. As the neural folds rise, inducers from the anterior neural plate (including the region that will form the retina) induce Pax6 expression in the anterior ectoderm that can form lens tissue.
  4. The optic vesicle secretes BMP and FGF family paracrine factors, which induce the synthesis of the Sox transcription factors and initiate observable lens formation

More Questions
TLS Online TPP Program

#Question id: 28358

#Unit 5. Developmental Biology

Which of the following protein is responsible for the localization of nanos mRNA at the posterior end and also involved in germ cell determination? 
TLS Online TPP Program

#Question id: 28359

#Unit 5. Developmental Biology

 if the Vasa is mutant that gives the mutant phenotype except_____
TLS Online TPP Program

#Question id: 28360

#Unit 5. Developmental Biology

Which of the following proteins function as localization of nanos mRNA?
a) Vasa
b) tudor & oskar 
c) Acron & telson 
d) exuperantia & swallow
TLS Online TPP Program

#Question id: 28361

#Unit 5. Developmental Biology

 Which of the following protein is involve to the stabilization of Nanos localization complex ?
TLS Online TPP Program

#Question id: 28362

#Unit 5. Developmental Biology

if the Valois is mutant that gives the mutant phenotype except_____
TLS Online TPP Program

#Question id: 28363

#Unit 5. Developmental Biology

Which of the following gene is responsible for the activation of the tips of the embryo and responsible for the specification of terminal axis?