Asked in PMC Practice Test 27 (2021) 2021Moderate

Which of these processes is the means by which a material can directly uptake and incorporate foreign DNA from the environment into its genome?

Correct answer: B. Transformation

  • A. Transduction
  • B. Transformation
  • C. Binary fission
  • D. Conjugation

Explanation

Option B is correct since the transformation is the process of transmitting genetic information from one bacterium to another bacterium causing it to transform (change). Option A is incorrect since transduction is the process in which genetic material is transferred from one bacterium to another by a third party which is a bacteriophage. Option C is incorrect since binary fission is the asexual mode of reproduction of bacteria. Option D is incorrect since conjugation is the process of transfer of genetic material from one bacterium to another through a tube called the conjugation tube or cytoplasmic bridge.

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Biotechnology applies genetic engineering, cell culture and recombinant DNA methods to medicine and public health. The material includes production of insulin, vaccines and antibiotics, diagnostic techniques, gene therapy, genetically modified organisms and the ethical concerns surrounding manipulation of human genes.

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