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TLS Online TPP Program

#Question id: 1973

Clonal selection is an explanation for how

#Unit 4. Cell Communication and Cell Signaling

  1. a single type of stem cell can produce both red blood cells and white blood cells.

  2. V, J, and C gene segments are rearranged.

  3. an antigen can provoke production of high levels of specific antibodies.

  4. HIV can disrupt the immune system.

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TLS Online TPP Program

#Question id: 33423

#Unit 1. Molecules and their Interaction Relevant to Biology

Which enzyme catalyses this reaction 
TLS Online TPP Program

#Question id: 5956

#General Aptitude

Any date in march is the same day of the week as corresponding date in which month of the same year?
TLS Online TPP Program

#Question id: 24604

#Unit 2. Cellular Organization

Interrupted genes are equal to
TLS Online TPP Program

#Question id: 15662

#Unit 8. Inheritance Biology

You develop an inbred strain of mice that display one of two distinct syndromes. What evidence might lead you to believe that these mice are mutant for a gene or genes affected by imprinting?
TLS Online TPP Program

#Question id: 10738

#Unit 10. Ecological Principles

Which of the following terms is inconsistent with the others?