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TLS Online TPP Program

#Question id: 15670

A researcher would like to map the location of galE and trpA genes in a new species of bacterium that appears to be closely related to E. coli. He decides to use cotransduction, and generates appropriate donor and recipient strains. He is disappointed when cotransduction is not seen in his experiement. What is the most reasonable explanation for this situation?

#Unit 8. Inheritance Biology
  1. His new bacterial species does not have galE or trpA genes.
  2. His new bacterial species cannot survive galE or trpA mutation.
  3. These two genes are too far apart to be mapped by cotransduction
  4. These two genes are too close together to be mapped by cotransduction
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TLS Online TPP Program

#Question id: 12506

#Unit 8. Inheritance Biology

Using the linked markers III 3 can be told that:
TLS Online TPP Program

#Question id: 28419

#Unit 5. Developmental Biology

A 1-cell-thick area in the center of the avian blastoderm that forms most of the actual embryo is called___
TLS Online TPP Program

#Question id: 28595

#Unit 2. Cellular Organization

Cyclin A/B-CDK 1 are which phase of Cyclin–CDKs? 
TLS Online TPP Program

#Question id: 11752

#Unit 7. System Physiology – Animal

Which of the following substances enhances the sensitivity of pain receptors but does not directly excite them?
TLS Online TPP Program

#Question id: 19306

#Unit 12. Applied Biology

35S promoter sequence is derived from which plant virus