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TLS Online TPP Program

#Question id: 2710

Which of the following most accurately describes a retrotransposon?

#Unit 2. Cellular Organization

  1. A DNA sequence that can move from one site in the genome to another without replicating

  2. A DNA sequence that can be deleted from the genome without consequence

  3. A DNA sequence that replicates via an RNA intermediate

  4. A DNA sequence that causes base-substitution mutations at some other site on the chromosome

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TLS Online TPP Program

#Question id: 181

#Unit 1. Molecules and their Interaction Relevant to Biology

Titration of valine by a strong base, for example NaOH, reveals two pK’s. The titration reaction occurring at pK2 (pK2 = 9.62) is:
TLS Online TPP Program

#Question id: 1811

#Unit 4. Cell Communication and Cell Signaling

The first wave of fetal γδ T-cell receptor cells in mouse colonize the:
TLS Online TPP Program

#Question id: 10289

#Unit 6. System Physiology – Plant

If C6 of glucose is radiolabelled, which carbon of Dihydroxyacetone phosphate and glyceraldehyde 3-phosphate  is radiolabelled?
TLS Online TPP Program

#Question id: 24623

#Unit 2. Cellular Organization

Most known genetic defects in human genes are due to the
TLS Online TPP Program

#Question id: 2678

#Unit 2. Cellular Organization

Insertional inactivation of the lacZ gene on a plasmid can be used to screen for recombinants on a plate containing: