TLS Online TPP Program

#Question id: 17659


During your study of the gene for an enzyme you have isolated an amber mutation in the middle of the gene which produces a truncated form of the enzyme. By placing a +1 frameshift mutation a short distance before the amber mutation and a –1 frameshift mutation a short distance after the amber mutation you create a triple mutant that restores expression of a functional, full-length enzyme. 
a) +1 frameshift puts the amber mutation out of frame so that it is no longer read as a stop.
b) -1 frameshift is inserted after the amber so that no longer read as a stop.
c)  -1 frameshift is inserted after the amber to restore the frame of the end of the protein.
d) +1 frameshift puts the amber mutation out of frame so that it restore the frame of the end of the protein.
Which of the following is the correct prediction about the frame shift mutation?

#Unit 13. Methods in Biology
  1. B and D
  2. B and C
  3. A and C
  4. A and D
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TLS Online TPP Program

#Question id: 28452

#Unit 5. Developmental Biology

Which of the following cell divide to form the lateral vulval cells?

TLS Online TPP Program

#Question id: 28453

#Unit 5. Developmental Biology

The cells which donot receive any signals from the anchor cell because these cell farther away from anchor cells that involve to generate which type of cell by default ?

TLS Online TPP Program

#Question id: 28454

#Unit 5. Developmental Biology

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: 28455

#Unit 5. Developmental Biology

Which of the following protein is function as concentration gradient manner in C.elegans?

TLS Online TPP Program

#Question id: 28456

#Unit 5. Developmental Biology

 Which of the following VPCs involve to generates the central vulval cells?

TLS Online TPP Program

#Question id: 28457

#Unit 5. Developmental Biology

In which case of vulva formation in C.elegan, precursor cell has the ability to become hypodermis ?