TLS Online TPP Program

#Question id: 26938


Which of the following statements is the most appropriate to define character displacement?

#Unit 10. Ecological Principles
  1. Two related species depending on the same prey species avoid competition by feeding at different times of the day.
  2. The body sizes of two related species are very similar when they are allopatric but in geographical areas of sympatric, one species is significantly smaller than the other
  3. The food niche of a species is generally wider in the absence of competing species than in their presence.
  4.  Closely related species can coexist if their densities are regulated by a predator
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TLS Online TPP Program

#Question id: 5248

#Unit 8. Inheritance Biology

Which of the following is a description of generalized transduction?

TLS Online TPP Program

#Question id: 5249

#Unit 8. Inheritance Biology

What is the best explanation for why Bernard Davis didn't observe generalized transduction in his U tube experiments?

TLS Online TPP Program

#Question id: 5250

#Unit 8. Inheritance Biology

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 generatesnappropriate donor and recipient strains. He is disappointed when cotransduction is not seen in his experiement. What is the most reasonable explanation for this situation?

TLS Online TPP Program

#Question id: 5251

#Unit 8. Inheritance Biology

What do transduction, transformation, and conjugation have in common?

TLS Online TPP Program

#Question id: 5252

#Unit 8. Inheritance Biology

Which type(s) of genetic transfer lead to incorporation of new DNA into the bacterial chromosome?

I. Conjugation mediated by F factor

II. Hfr mediated conjugation

III. Transduction

IV. Transformation

TLS Online TPP Program

#Question id: 5253

#Unit 8. Inheritance Biology

In a hypothetical situation, the genes for sex pilus construction and for tetracycline resistance are located together on the same plasmid within a particular bacterium. If this bacterium readily performs conjugation involving a copy of this plasmid, then the resultshould be