Horizontal Gene Transfer and Recombination in Bacteria
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Questions and Answers

What is the main advantage of plasmids transferring horizontally between bacteria?

  • Slower dissemination of drug resistance
  • Decreased genetic recombination
  • Enhanced genetic diversity (correct)
  • Reduced bacterial population

Which type of recombination involves the exchange of genetic material between homologous regions of DNA molecules?

  • Transposition
  • Non-homologous recombination
  • Homologous recombination (correct)
  • Site-specific recombination

What is the process by which two DNA molecules exchange genetic information to produce offspring DNA with a novel combination of traits from each parent DNA molecule?

  • Recombination (correct)
  • Transposition
  • Assimilation
  • Integration

Which type of recombination involves the exchange of genetic material at specific target sites in the DNA?

<p>Site-specific recombination (C)</p> Signup and view all the answers

What is the term used to describe the movement of genetic elements within the genome, leading to rearrangement of genetic information?

<p>Transposition (A)</p> Signup and view all the answers

Which process is important in DNA repair, genetic recombination during meiosis, and the generation of genetic diversity?

<p>Homologous recombination (B)</p> Signup and view all the answers

What type of mutation occurs when the resulting base triplet codes for the same amino acid as the original triplet?

<p>Silent mutation (A)</p> Signup and view all the answers

Which gene transfer mechanism involves the direct transfer of genetic material between bacterial cells in physical contact?

<p>Conjugation (B)</p> Signup and view all the answers

What is the process where bacterial DNA is transferred from one cell to another by bacteriophages?

<p>Transduction (D)</p> Signup and view all the answers

What happens when a recipient cell gains the ability to participate in future conjugation events?

<p>It becomes F+ (A)</p> Signup and view all the answers

What kind of mutations result in a different amino acid being produced due to a change in the coding sequence?

<p>Missense mutations (D)</p> Signup and view all the answers

Which type of DNA transfer process involves the formation of a conjugation bridge between bacterial cells?

<p>Conjugation (A)</p> Signup and view all the answers

What is the key difference between replicative and non-replicative transposition?

<p>Replicative transposition involves making a copy of the transposon, while non-replicative transposition involves excising the transposon from one location and inserting it into another. (A)</p> Signup and view all the answers

Which technique in Recombinant DNA Technology is used to make identical copies of DNA fragments or entire organisms?

<p>Cloning (D)</p> Signup and view all the answers

What is the function of restriction enzymes in Recombinant DNA Technology?

<p>To cut DNA at specific sites for precise manipulation (D)</p> Signup and view all the answers

Which step in Recombinant DNA Technology involves introducing the recombinant DNA into a host organism's cells?

<p>Transformation (B)</p> Signup and view all the answers

What type of recombination involves the exchange of genetic material between DNA molecules that do not have significant sequence similarity?

<p>Non-homologous recombination (B)</p> Signup and view all the answers

In recombinant DNA technology, what is the function of vectors (plasmids)?

<p>To carry foreign genes into host cells (A)</p> Signup and view all the answers

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