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TLS Online TPP Program

#Question id: 15520

Double-negative (DN) thymocytes that have successfully rearranged their TCRβ chains are valuable, and are identified and expanded via a process known as 

#Unit 4. Cell Communication and Cell Signaling
  1. Single positive selection 
  2. TCRα locus rearrangement
  3. β-selection
  4. VDJ recombination

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TLS Online TPP Program

#Question id: 3972

#Unit 3. Fundamental Processes

An enhancer
TLS Online TPP Program

#Question id: 3973

#Unit 3. Fundamental Processes

Which of the following is not used in the electrophoretic mobility shift assay (EMSA)?
TLS Online TPP Program

#Question id: 3974

#Unit 3. Fundamental Processes

 A leucine-zipper motif contains
TLS Online TPP Program

#Question id: 3975

#Unit 3. Fundamental Processes

Which of the following is not a structural motif found in a DNA-binding domain?
TLS Online TPP Program

#Question id: 3976

#Unit 3. Fundamental Processes

After binding by E. coli RNA polymerase, the correct order of events for transcription initiation is:
TLS Online TPP Program

#Question id: 3977

#Unit 3. Fundamental Processes

Which one of the following statements about eukaryotic RNA polymerases is correct?